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13 results on '"University of Zagreb-University of Zagreb-Faculty of Science [Zagreb]"'

1. WOODIV, a database of occurrences, functional traits, and phylogenetic data for all Euro-Mediterranean trees

Author

Monnet, Anne-Christine, Cilleros, Kévin, Médail, Frédéric, Albassatneh, Marwan Cheikh, Arroyo, Juan, Bacchetta, Gianluigi, Bagnoli, Francesca, Barina, Zoltán, Cartereau, Manuel, Casajus, Nicolas, Dimopoulos, Panayotis, Domina, Gianniantonio, Doxa, Aggeliki, Escudero, Marcial, Fady, Bruno, Hampe, Arndt, Matevski, Vlado, Misfud, Stephen, Nikolic, Toni, Pavon, Daniel, Roig, Anne, Barea, Estefania Santos, Spanu, Ilaria, Strid, Arne, Vendramin, Giovanni Giuseppe, Leriche, Agathe, Institut méditerranéen de biodiversité et d'écologie marine et continentale (IMBE), Avignon Université (AU)-Aix Marseille Université (AMU)-Institut de recherche pour le développement [IRD] : UMR237-Centre National de la Recherche Scientifique (CNRS), Institut de Systématique, Evolution, Biodiversité (ISYEB ), Muséum national d'Histoire naturelle (MNHN)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA), Department of Plant Biology and Ecology, University of Seville, Department of Life and Environmental Sciences, University of Cagliari, National Research Council (CNR), Institute of Biosciences and BioResources, Department of Botany, Hungarian Natural History Museum, FRB-CESAB, Department of Biology, Division of Plant Biology, Laboratory of Botany, University of Patras, Department of Agriculture, Food and Forest Sciences, University of Palermo, Statistical Learning Lab, Institute of Applied and Computational Mathematics, Foundation for Research and Technology-Hellas (FORTH), Ecologie des Forêts Méditerranéennes (URFM), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Biodiversité, Gènes & Communautés (BioGeCo), Université de Bordeaux (UB)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Macedonian Academy of Sciences and Arts [Skopje, North Macedonia] (MASA), EcoGozo, Regional Development Directorate - Ministry for Gozo, Division of Botany [Zagreb], Department of Biology [Zagreb], Faculty of Science [Zagreb], University of Zagreb-University of Zagreb-Faculty of Science [Zagreb], University of Zagreb-University of Zagreb, Bakkevej 6, 5853, Ørbæk, Denmark, ANR-11-LABX-0061,OTMed,Objectif Terre : Bassin Méditerranéen(2011), Muséum national d'Histoire naturelle (MNHN)-École Pratique des Hautes Études (EPHE), Università degli Studi di Cagliari = University of Cagliari (UniCa), University of Patras, Università degli studi di Palermo - University of Palermo, Monnet A.-C., Cilleros K., Medail F., Albassatneh M.C., Arroyo J., Bacchetta G., Bagnoli F., Barina Z., Cartereau M., Casajus N., Dimopoulos P., Domina G., Doxa A., Escudero M., Fady B., Hampe A., Matevski V., Misfud S., Nikolic T., Pavon D., Roig A., Barea E.S., Spanu I., Strid A., Vendramin G.G., and Leriche A.

Subjects
Statistics and Probability, Data Descriptor, Databases, Factual, Mediterranean Region, Conservation biology, Settore BIO/02 - Botanica Sistematica, Science, Biodiversity, Library and Information Sciences, Trees, Computer Science Applications, Education, Biogeography, Settore BIO/03 - Botanica Ambientale E Applicata, [SDE]Environmental Sciences, Forest, Community ecology, Statistics, Probability and Uncertainty, Forest ecology, Ecosystem, Phylogeny, Information Systems
Abstract

Trees play a key role in the structure and function of many ecosystems worldwide. In the Mediterranean Basin, forests cover approximately 22% of the total land area hosting a large number of endemics (46 species). Despite its particularities and vulnerability, the biodiversity of Mediterranean trees is not well known at the taxonomic, spatial, functional, and genetic levels required for conservation applications. The WOODIV database fills this gap by providing reliable occurrences, four functional traits (plant height, seed mass, wood density, and specific leaf area), and sequences from three DNA-regions (rbcL, matK, and trnH-psbA), together with modelled occurrences and a phylogeny for all 210 Euro-Mediterranean tree species. We compiled, homogenized, and verified occurrence data from sparse datasets and collated them on an INSPIRE-compliant 10 × 10 km grid. We also gathered functional trait and genetic data, filling existing gaps where possible. The WOODIV database can benefit macroecological studies in the fields of conservation, biogeography, and community ecology., Measurement(s) occurrence • Trait • DNA Technology Type(s) Sampling • digital curation • DNA sequencing assay Sample Characteristic - Organism Viridiplantae • trees Sample Characteristic - Environment forest biome Sample Characteristic - Location Mediterranean Region • Europe Machine-accessible metadata file describing the reported data: 10.6084/m9.figshare.13553519

Published
2021
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2. Spatial patterns of genus-level phylogenetic endemism in the tree flora of Mediterranean Europe

Author

Anne-Christine Monnet, Francesca Bagnoli, Arndt Hampe, Frédéric Médail, Panayotis Dimopoulos, Giovanni G. Vendramin, Toni Nikolić, Gianni Baccheta, Agathe Leriche, Marwan Cheikh Albassatneh, Bruno Fady, Juan Arroyo, Loic Ponger, Marcial Escudero, Universidad de Sevilla. Departamento de Biología Vegetal y Ecología, Aix-Marseille University, Institut de Systématique, Evolution, Biodiversité (ISYEB ), Muséum national d'Histoire naturelle (MNHN)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA), Institut méditerranéen de biodiversité et d'écologie marine et continentale (IMBE), Avignon Université (AU)-Aix Marseille Université (AMU)-Institut de recherche pour le développement [IRD] : UMR237-Centre National de la Recherche Scientifique (CNRS), Institut d'écologie et des sciences de l'environnement de Paris (iEES Paris ), Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Department of Plant Biology and Ecology, University of Seville, Università degli Studi di Cagliari = University of Cagliari (UniCa), Istituto di Bioscienze e BioRisorse [Palermo] (IBBR), Consiglio Nazionale delle Ricerche (CNR), University of Patras [Patras], Biodiversité, Gènes & Communautés (BioGeCo), Université de Bordeaux (UB)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Division of Botany [Zagreb], Department of Biology [Zagreb], Faculty of Science [Zagreb], University of Zagreb-University of Zagreb-Faculty of Science [Zagreb], University of Zagreb-University of Zagreb, Ecologie des Forêts Méditerranéennes (URFM), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), ANR-11-LABX-0061,OTMed,Objectif Terre : Bassin Méditerranéen(2011), Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Department of Life and Environmental Sciences, Botany Division, University of Cagliari, Cagliari, Italy, Department of Biology, Laboratory of Botany, University of Patras, Muséum national d'Histoire naturelle (MNHN)-École Pratique des Hautes Études (EPHE), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), and University of Patras

Subjects
0106 biological sciences, Mediterranean climate, Nonmetric Multidimensional Scaling, Biodiversity, Context (language use), Conservation, Relative environmental turnover, 010603 evolutionary biology, 01 natural sciences, Mediterranean Basin, Phylogenetic diversity, relative environmental turnover, phylogenetic endemism, Phylogenetic endemism, Endemism, Ecology, Evolution, Behavior and Systematics, Phylogenetic tree, Ecology, 010604 marine biology & hydrobiology, conservation, Euro-Mediterranean vascular flora, 15. Life on land, Geography, 13. Climate action, [SDE]Environmental Sciences, Spatial ecology, phylogenetic diversity
Abstract

Aim: The Mediterranean Basin is a major hotspot of plant biodiversity, including forest trees. Over the past centuries, Mediterranean forests have been fragmented and over-exploited, to which the threats of climate change are now added. Our aim is to better understand patterns and processes of tree biodiversity in the Mediterranean and to provide indicators complementing the traditional approaches to biodiversity conservation based on species counts and occurrences, using georeferenced phylogenetic diversity and endemism analyses in a spatial ecological context. Location: Mediterranean Europe. Methods: Using a dated phylogeny of the 64 Euro-Mediterranean tree genera, we calculated phylogenetic diversity for all 50 × 50 km2 grid cells spanning Mediterranean Europe (n = 643) and compared values with those obtained for genus-level taxonomic diversity. Then, we tested the relative influence of geography, past and present climate, and soil on tree diversity (phylogenetic or taxonomic) and its geographical turnover. Geographical patterns of phylogenetic endemism were inferred using the Categorical Analyses of Neo- and Paleo-Endemism (CANAPE) methodology. Results: We showed that phylogenetic and taxonomic diversity within and among cells are correlated and influenced by soil parameters as well as current, Holocene and Late Glacial Maximum climate. Southern Spain, Cyprus and some Aegean islands contained areas of disproportionately high phylogenetic diversity and a concentration of phylogenetic paleo-endemics, while phylogenetic neo-endemism was high in eastern Sicily. Mixed phylogenetic endemism regions were detected in southern Spain and Portugal, in the Balkans and in Crete. Main conclusions: Our phylogenetic approach provides relevant indicators for better protecting forests of the Mediterranean, encompassing past and present evolutionary processes and factors. We consider areas that show a concentration of evolutionary history manifested by high phylogenetic endemism as high priority targets for the conservation of the European tree flora. Aix-Marseille University ANR-11-LABX-0061

Published
2021
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3. Discrete mononuclear and dinuclear compounds containing a MoO 2 2+ core and 4-aminobenzhydrazone ligands: synthesis, structure and organic-solvent-free epoxidation activity

Author

Marina Cindrić, Gordana Pavlović, Višnja Vrdoljak, Dominique Agustin, Dubravka Šišak-Jung, Dubravka Matković-Čalogović, Jana Pisk, Danijela Cvijanović, School of Medicine, University of Zagreb, Division of General and Inorganic Chemistry [Zagreb], Department of Chemistry [Zagreb], Faculty of Science [Zagreb], University of Zagreb-University of Zagreb-Faculty of Science [Zagreb], University of Zagreb-University of Zagreb, Faculty of Textile Technology, Department of Applied Chemistry, University of Zagreb, Universität Zürich [Zürich] = University of Zurich (UZH), Laboratoire de chimie de coordination (LCC), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie de Toulouse (ICT-FR 2599), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), and In part : Croatian Science Foundation - project IP-2016-06-4221.

Subjects
Aqueous solution, 4-aminobenzoylhydrazone ligands, molybdenum(VI) complexes, epoxidation activity, Chemistry, Ligand, chemistry.chemical_element, 02 engineering and technology, General Chemistry, Organic solvent free, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Medicinal chemistry, Catalysis, 0104 chemical sciences, chemistry.chemical_compound, Salicylaldehyde, Cyclooctene, Molybdenum, Materials Chemistry, Density functional theory, [CHIM.COOR]Chemical Sciences/Coordination chemistry, 0210 nano-technology
Abstract

International audience; Cyclic dinuclear molybdenum(vi) complexes [MoO2(L1–3)]2 (1, 2-α, 2-β and 3) were synthesized through the use of coordination-driven self-assembly of a MoO22+ core and 4-aminobenzoylhydrazone ligands (salicylaldehyde (H2L1), 3-methoxysalicylaldehyde (H2L2) or 4-methoxysalicylaldehyde 4-aminobenzoylhydrazone (H2L3)). Their X-ray diffraction (XRD) analysis revealed that these types of ligands could serve as organic linkers for cis-octahedral complexes containing a MoO22+ core. Mononuclear complexes [MoO2(L1–3)(MeOH)] (1a–3a) and [MoO2(L1–3)(EtOH)] (1b, 2b-α, 2b-β and 3b) were also obtained. In the presence of strong donors, such as dmf, ligand substitution occurred and the structures of 1–3 changed into [MoO2(L1)(dmf)] (1c), [MoO2(L2)(dmf)] (2c) and [MoO2(L3)(H2O)]·dmf (3c·dmf), respectively. The dioxidomolybdenum(vi) complexes were tested for catalytic epoxidation of cyclooctene under eco-friendly reaction conditions by using aqueous tert-butyl hydroperoxide (TBHP) as an oxidant without the addition of an organic solvent. The present study showed much better activity of the dinuclear catalysts than the mononuclear ones due to the weak donor properties of the amino group and high geometric constraints occurring in such small sized self-assembled systems as confirmed by density functional theory calculations.

Published
2019
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4. Molybdenum(VI) complexes of hemilabile aroylhydrazone ligands as efficient catalysts for greener cyclooctene epoxidation: an experimental and theoretical approach

Author

Mirta Rubčić, Višnja Vrdoljak, Dominique Agustin, Dino Kuzman, Marina Cindrić, Jana Pisk, Division of General and Inorganic Chemistry [Zagreb], Department of Chemistry [Zagreb], Faculty of Science [Zagreb], University of Zagreb-University of Zagreb-Faculty of Science [Zagreb], University of Zagreb-University of Zagreb, Laboratoire de chimie de coordination (LCC), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie de Toulouse (ICT-FR 2599), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), and Croatian Science Foundation (IP-2016-06-4221)

Subjects
Aqueous solution, Denticity, Ligand, chemistry.chemical_element, 02 engineering and technology, General Chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Catalysis, 2-aminobenzoylhydrazones, hemilabile ligands, molybdenum(VI) complexes, cyclooctene epoxidation, 0104 chemical sciences, chemistry.chemical_compound, chemistry, Salicylaldehyde, Cyclooctene, Molybdenum, Polymer chemistry, Materials Chemistry, [CHIM.COOR]Chemical Sciences/Coordination chemistry, Density functional theory, 0210 nano-technology
Abstract

International audience; The focus of this work was on the synthesis, characterization and catalytic activity of Mo(vi) complexes with hemilabile polydentate ligands that show a high tendency to form discrete small-sized self-assembled structures. A series of mononuclear, [MoO2(L1 or 3)(MeOH)] (1a and 3a) and [MoO2(L1)(EtOH)] (1b), and dinuclear, [MoO2(L1–3)]2 (1–3), complexes was synthesised by using 2-aminobenzoylhydrazone ligands derived from salicylaldehyde (H2L1), 3-methoxy-2-hydroxybenzaldehyde (H2L2) and 4-methoxy-2-hydroxybenzaldehyde (H2L3). Different reaction conditions led to the formation of several crystalline forms of the dinuclear cyclic species [MoO2(L1 or 3)]2 (1-α, 1-β, 1-γ, 1·CH3CN, 3-α, 3-β and 3·2CH3CN), a feature which is observed for the first time in the case of the metallosupramolecular compounds incorporating cis-MoO22+ subunits. These complexes were tested as catalysts for cyclooctene epoxidation under eco-friendly reaction conditions by using aqueous tert-butyl hydroperoxide as an oxidant without the addition of an organic solvent. The use of the hemilabile ligands provided the opportunity to employ relatively stable coordinatively saturated dinuclear Mo(vi) complexes, which in turn offered access to highly reactive pentacoordinated species in the presence of olefins. Lastly, the hemilabile ligand induced catalytic enhancement was addressed by using density functional theory calculations.

Published
2019
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5. Dioxotungsten(VI) complexes with isoniazid-related hydrazones as (pre)catalysts for olefin epoxidation: solvent and ligand substituent effects

Author

Biserka Prugovečki, Dubravka Matković-Čalogović, Predrag Novak, Dominique Agustin, Jana Pisk, Višnja Vrdoljak, Division of General and Inorganic Chemistry [Zagreb], Department of Chemistry [Zagreb], Faculty of Science [Zagreb], University of Zagreb-University of Zagreb-Faculty of Science [Zagreb], University of Zagreb-University of Zagreb, IUT 'A' - Département de Chimie [Castres], Institut Universitaire de Technologie - Paul Sabatier (IUT Paul Sabatier), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, Laboratoire de chimie de coordination (LCC), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie de Toulouse (ICT-FR 2599), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), and Université Fédérale Toulouse Midi-Pyrénées

Subjects
tungsten, isoniazid, hydrazones, epoxidation, solvent-free, chemistry.chemical_classification, Olefin fiber, 010405 organic chemistry, Ligand, Stereochemistry, General Chemical Engineering, Substituent, Hydrazone, Aromaticity, General Chemistry, Nuclear magnetic resonance spectroscopy, 010402 general chemistry, 01 natural sciences, Medicinal chemistry, 0104 chemical sciences, Catalysis, chemistry.chemical_compound, chemistry, [CHIM.COOR]Chemical Sciences/Coordination chemistry, Selectivity
Abstract

International audience; The mononuclear dioxotungsten(VI) complexes [WO2(L-3OMe)(D)] (1a and 1b), [WO2(L-4OMe)(D)] (2a and 2b) and [WO2(L-H)(D)] (3a and 3b) (D = EtOH (1a-3a) or MeOH (1b-3b); L-3OMe = 3-methoxy-2-oxybenzaldehyde isonicotinoyl hydrazonato, L-4OMe = 4-methoxy-2-oxybenzaldehyde isonicotinoyl hydrazonato, L-H = 2-oxybenzaldehyde isonicotinoyl hydrazonato) were synthesized by the reaction of [WO2(acac)(2)]center dot 0.5C(6)H(5)Me with the respective isoniazid-related hydrazone. The compounds were characterized by microanalysis, FT-IR and NMR spectroscopy, thermogravimetric analysis, and powder X-ray diffraction method. The crystal and molecular structures of 1a, 1b, 3a and [WO2(acac)(2)]center dot 0.5C(6)H(5)Me were determined by single crystal X-ray diffraction. The structures of 1a, 1b, 3a are mononuclear and form hydrogen bonded centrosymmetric dimers. In all three complexes, the dimers are also held together by pi center dot center dot center dot pi interactions between aromatic rings. The catalytic performances (activity and selectivity) of 1a-3a and 1b-3b towards alkene epoxidation by tert-butyl hydroperoxide (TBHP) were investigated under different conditions.

Published
2016
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6. Pyridoxal based ONS and ONO vanadium(V) complexes: Structural analysis and catalytic application in organic solvent free epoxidation

Author

Dominique Agustin, Jean-Claude Daran, Rinaldo Poli, Jana Pisk, Laboratoire de chimie de coordination (LCC), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie de Toulouse (ICT-FR 2599), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Division of General and Inorganic Chemistry [Zagreb], Department of Chemistry [Zagreb], Faculty of Science [Zagreb], University of Zagreb-University of Zagreb-Faculty of Science [Zagreb], University of Zagreb-University of Zagreb, IUT 'A' - Département de Chimie [Castres], Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut Universitaire de Technologie - Paul Sabatier (IUT Paul Sabatier), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, Institut Universitaire de France (IUF), Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.), Institut de Chimie de Toulouse (ICT), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut Universitaire de Technologie - Paul Sabatier (IUT Paul Sabatier), and Université de Toulouse (UT)-Université de Toulouse (UT)

Subjects
Stereochemistry, Vanadium(V) complexes, Vanadium, Epoxidation, Organic solvent-free, Mechanism, chemistry.chemical_element, Hydrazide, DFT calculations, Medicinal chemistry, Catalysis, chemistry.chemical_compound, Cyclooctene, Solvent free, [CHIM.COOR]Chemical Sciences/Coordination chemistry, Physical and Theoretical Chemistry, Catalyst recovery, Epoxidation mechanism, Olefin fiber, Pyridoxal Schiff base, Schiff base, Ligand, [CHIM.ORGA]Chemical Sciences/Organic chemistry, Process Chemistry and Technology, Nuclear magnetic resonance spectroscopy, [CHIM.CATA]Chemical Sciences/Catalysis, Trigonal bipyramidal molecular geometry, chemistry
Abstract

International audience; A series of dinuclear and mononuclear oxovanadium(V) complexes containing tridentate Schiff base ligands derived from pyridoxal and appropriate thiosemicarbazide or hydrazide are reported. The compounds were characterised by elemental analysis, thermogravimetric analysis, IR and NMR spectroscopy. The molecular structure of the dioxido-vanadium(V) complex [VO2(HL5)]center dot MeOH center dot H2O (H2L5 = pyridoxal benzhydrazido ligand), determined by X-ray crystallography, reveals an unexpected distorted trigonal bipyramidal arrangement of the VO2 moiety. A DFT study of this molecule and of the related [VO2(H2L5)] complex of V-IV reveals a moderate effect of the oxidation state change on the bond distances and angles, pointing to solvation as the cause of the structural distortion. All complexes were tested as (pre) catalysts for olefin epoxidation by aqueous tert-butylhydroxyperoxide (TBHP) under solvent-free conditions. Low vanadium loadings (0.05% vs. olefin) resulted in good cyclooctene conversions and TOFs. The lifetime of one catalyst was explored through repeated runs with recovery/recycling. DFT calculations have also addressed the olefin epoxidation mechanism, which reveals the possible direct O atom transfer from the activated tert-butoxido (tBuOO(-)) ligand, without the need to generate a peroxido (022) ligand.

Published
2015
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7. Dioxomolybdenum(VI) and dioxotungsten(VI) complexes chelated with the ONO tridentate hydrazone ligand: synthesis, structure and catalytic epoxidation activity

Author

Dubravka Matković-Čalogović, Jelena Parlov Vuković, Jana Pisk, Dominique Agustin, Predrag Novak, Višnja Vrdoljak, Division of General and Inorganic Chemistry [Zagreb], Department of Chemistry [Zagreb], Faculty of Science [Zagreb], University of Zagreb-University of Zagreb-Faculty of Science [Zagreb], University of Zagreb-University of Zagreb, Laboratoire de chimie de coordination (LCC), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie de Toulouse (ICT-FR 2599), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), IUT 'A' - Département de Chimie [Castres], Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut Universitaire de Technologie - Paul Sabatier (IUT Paul Sabatier), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, and INA-Industrija nafte d.d.

Subjects
010405 organic chemistry, Stereochemistry, Ligand, Infrared spectroscopy, General Chemistry, Nuclear magnetic resonance spectroscopy, 010402 general chemistry, 01 natural sciences, Medicinal chemistry, Catalysis, 0104 chemical sciences, chemistry.chemical_compound, Salicylaldehyde, chemistry, Cyclooctene, Materials Chemistry, Chelation, [CHIM.COOR]Chemical Sciences/Coordination chemistry, molybdenum, tungsten, aroylhydrazone, epoxidation, solvent-free, Acetonitrile, Dichloromethane
Abstract

International audience; Synthesis of the dioxomolybdenum(vi) complexes [MoO2(L-3OMe)(EtOH)) (1), (MoO2(L-4OMe)(EtOH)] (2) and [MoO2(L-H)(EtOH)] (3) and dioxotungsten(VI) complexes [WO2(L-3OMe)(EtOH)] (4), [WO2(L-4OMe)(EtOH)] (5) and [WO2(L-H)](n) (6a) was carried out using [MO2(C5H7O2)(2)] = Mo or W) and the corresponding aroythydrazone ligand H2LR (3-methoxysalicylaldehyde 4-hydroxybenzhydrazone (H2L3OMe), 4-methoxysalicylaldehyde 4-hydroxybenzhydrazone (H2L4OMe), or salicylaldehyde 4-hydroxybenzhydrazone (H2LH) in ethanol. Compounds obtained upon heating of the mononuclear complexes in acetonitrile or dichtoromethane, [MO2(L-R)](n) (1a-6a) or [MoO2(L-3OMe)](2) (1b), respectively, were also investigated. Crystal and molecular structures of the mononuclear 1, 2 and 3, polynuclear 1a.MeCN and dinuclear 1b complexes were determined by the single crystal X-ray diffraction method. Powder X-ray diffraction showed isostructurality of 1 and 4, and 2 and 5. The complexes were further characterized by elemental analysis, IR spectroscopy, TO and DSC analyses, and one- and two-dimensional NMR spectroscopy. The catalytic performances of 1-5 and 6a were investigated for epoxidation of cyclooctene using aqueous tert-butyl hydroperoxide (TBHP) as the oxidant.

Published
2014
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8. Sobolev norm estimates for a class of bilinear multipliers

Author

Vjekoslav Kovač, Frédéric Bernicot, Laboratoire de Mathématiques Jean Leray (LMJL), Centre National de la Recherche Scientifique (CNRS)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN), Department of Mathematics, Department of Mathematics [Zagreb], Faculty of Science [Zagreb], University of Zagreb-University of Zagreb-Faculty of Science [Zagreb], University of Zagreb-University of Zagreb, and ANR-11-JS01-0001,AFoMEN,Analyse de Fourier Multilineaire et EDPs Nonlineaires(2011)

Subjects
Spatial variable, Pure mathematics, Pseudodifferential operators, Applied Mathematics, 010102 general mathematics, Bilinear interpolation, bilinear Hilbert transform, bilinear multiplier, paraproduct, pseudodifferential operator, Sobolev space, General Medicine, [MATH.MATH-CA]Mathematics [math]/Classical Analysis and ODEs [math.CA], 01 natural sciences, 030207 dermatology & venereal diseases, 03 medical and health sciences, 0302 clinical medicine, Operator (computer programming), Mathematics - Classical Analysis and ODEs, Norm (mathematics), 0101 mathematics, 42B15, Analysis, Mathematics
Abstract

We consider bilinear multipliers that appeared as a distinguished particular case in the classification of two-dimensional bilinear Hilbert transforms by Demeter and Thiele [9]. In this note we investigate their boundedness on Sobolev spaces. Furthermore, we study structurally similar operators with symbols that also depend on the spatial variables. The new results build on the existing L^p estimates for a paraproduct-like operator previously studied by the authors in [5] and [10]. Our primary intention is to emphasize the analogies with Coifman-Meyer multipliers and with bilinear pseudodifferential operators of order 0., Comment: 11 pages

Published
2013
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9. Attenuated total reflection - infrared spectroscopy applied to the study of mineral-aqueous electrolyte solution interfaces: general overview and a case study

Author

Grégory Lefèvre, Johannes Lützenkirchen, Tajana Preočanin, Laboratoire d'Electrochimie, Chimie des Interfaces et Modélisation pour l'Energie (LECIME - UMR 7575) (LECIME), Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC), Division of Physical Chemistry [Zagreb], Department of Chemistry [Zagreb], Faculty of Science [Zagreb], University of Zagreb-University of Zagreb-Faculty of Science [Zagreb], University of Zagreb-University of Zagreb, Karlsruhe Institute of Technology (KIT), Institute for Nuclear Waste Disposal (INE), Karlsruhe Institute of Technology (KIT), and Theophile Theophanides

Subjects
geography, geography.geographical_feature_category, Mineral, Chemistry, Kinetics, Analytical chemistry, Infrared spectroscopy, Aquifer, 02 engineering and technology, [CHIM.INOR]Chemical Sciences/Inorganic chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, Adsorption, Chemical engineering, Attenuated total reflection, ddc:620, Solubility, 0210 nano-technology, Dissolution, Engineering & allied operations
Abstract

The present chapter gives an overview of the application of Attenuated total reflection - Infrared spectroscopy (ATR-IR) to the environmentally important mineral - aqueous electrolyte interface. At these interfaces the important adsorption processes occur that limit the availability of potentially toxic solutes. These retention processes may retard for example the migration of solutes in aquifer systems or even immobilize them on the aquifer material, which is usually a natural mineral. We give an introduction to the approach and an overview of its possible applicability (and in this context its use in contributing to the understanding of the acid-base chemistry of (oxy)(hydr)oxide mineral surfaces, the adsorption of anions and cations like the uranyl-ion, and the formation of ternary surface complexes can be mentioned in general). Our contribution focuses on a review on the interaction of small organic molecules with oxidic surfaces and we highlight previous studies and point to some controversary issues in selected studies that continue to exist despite extensive research. Obviously such studies relate to other vibrational spectroscopies like Raman or sum frequency generation vibrational spectroscopies. Finally we discuss results from an experimental study on the mineral gibbsite (Al(OH)3) in the presence of 5-sulfosalicylic acid (5-SSA).

Published
2012
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10. Permanent Genetic Resources added to Molecular Ecology Resources Database 1 October 2009–30 November 2009

Author

Gen-Bo Xu, Yi Kyung Kim, Zhen Xia Sha, N. Sreejayan, Maria Domenica Moccia, B. W. Hou, Fuwen Wei, Shaoying Liu, Mi Sook Min, Radosavljević Ivan, William Stewart Grant, Peter Kaňuch, Hai Hui Ye, Monika Pfunder, Stefan Woltmann, Antonis Rokas, Z. Y. Feng, Susanne Gustafsson, Benjamin N. Sacks, Hang Lee, M. L. Xie, Eun Ha Shin, Xiao Jun Xu, Kevin A. Feldheim, Scott A. Taylor, Zlatko Šatović, Maria Gaillard, Martin Lascoux, Christopher A. Saski, Ryan P. Walter, Vicki L. Friesen, Junghwa An, Shao Jing Li, Gudasalamani Ravikanth, Arnaud Béchet, William D. Templin, Juan A. Galaraza, Qingui Cai, Yi Wang, Zac Grauvogel, Åsa Berggren, Kyung Seok Kim, Sang Gyu Kim, James A. Morris-Pocock, Brian R. Kreiser, Sung Kyoung Choi, K. N. Ganeshaiah, Branka Javornik, X. Y. Ding, L. Han, Sofia Hemmilä, Julia Geraci, Daniel D. Heath, Leonardo A. Gallo, J. Zhong, Kyung i.Kl Kim, Frank Cézilly, Zhengxin Sun, Marcelle Moore, Maren A. Klich, Kumara P. Mohana, Yong Fan, F. Zhang, Zlatko Liber, Xiaolin Liao, Yong Jin Won, Athena Lam, Giovanni G. Vendramin, Alex Widmer, Xiangjiang Zhan, Sarah K. Brown, Han Chan Park, Yong Tao, Ramesh Vasudeva, Y. H. Ma, Yajun Ma, D. L. Li, Jing Wu, Kelly Lasater, George K. Roderick, Ke Jian Wang, Anna Cassel-Lundhagen, Carolina Soliani, J. Derek Hogan, Jernej Jakše, Yun Sun Lee, Ye Seul Kwan, Song-Lin Chen, Xin Hui Luo, Sean D. Schoville, Michael William Bruford, Jeffrey Robert Guyon, John G. Gibbons, Lin Lin, R. Uma Shaanker, Sang In Kim, Federico Sebastiani, W. Y. Li, Gui Zhong Wang, Rémi Wattier, Wei Cheng, Paula Marchelli, Woo-Jin Kim, BK21 program for Veterinary Science, Seoul National University [Seoul] (SNU), Centre de recherche de la Tour du Valat, Department of Ecology, Swedish University of Agricultural Sciences (SLU), Canid Diversity and Conservation Laboratory, University of California, Biodiversity and Ecological Processes Group, Cardiff University, Caopo Nature Reserves, Biogéosciences [UMR 6282] [Dijon] (BGS), Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Centre National de la Recherche Scientifique (CNRS), Key Laboratory for Sustainable Utilization of Marine Fisheries Resource, Ministry of Agriculture-Chinese Academy of Fishery Sciences, Alaska Department of Fish and Game, Jiangsu Provincal Key Laboratory for Biodiversity & Biotechnology, Nanjing Normal University (NNU), Department of Pathogen Biology and State Key Laboratory for Medical Immunology, Second Military Medical University, Pritzker Laboratory for Molecular Systematics and Evolution, The Field Museum, Department of Biology, Queen's University, Estación Biológica de Doñana (EBD), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Unidad de Genética Ecológica y Mejoramiento Forestal, INTA EEA Bariloche, School of Ecology and Conservation, University of Agricultural Sciences, Ashoka Trust for Research in Ecology and the Environment, Royal Enclave, Department of Forestry and Environmental Sciences, Department of Biological Sciences [Nashville], Vanderbilt University [Nashville], Program in Evolutionary Functional Genomics, Uppsala University, Auke Bay Laboratories (ABL), Alaska Fisheries Science Center (AFSC), NOAA National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)-National Oceanic and Atmospheric Administration (NOAA)-NOAA National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)-National Oceanic and Atmospheric Administration (NOAA), Great Lakes Institute for Environmental Research, University of Windsor [Ca], Centre for Plant Biotechnology and Breeding, University of Ljubljana, Biotechnology Research Division, National Fisheries Research and Development Institute, Conservation Genome Resource Bank for Korean Wildlife (CGRB), USDA, Agence Régionale de la Santé (ARS), Department of Biological Sciences, University of Southern Mississippi (USM), Division of EcoScience, EWHA Womans University (EWHA), Department of Environmental Science, Policy, and Management [Berkeley] (ESPM), University of California [Berkeley], University of California-University of California, Key Laboratory of Ministry of Education for Coastal and Wetland Ecosystems, Xiamen University, State Key Laboratory of Marine Environmental Science (MEL), Division of Botany [Zagreb], Department of Biology [Zagreb], Faculty of Science [Zagreb], University of Zagreb-University of Zagreb-Faculty of Science [Zagreb], University of Zagreb-University of Zagreb, Sichuan Academy of Forestry, College of Aqua-life Science and Technology, Shanghai Ocean University, Consejo Nacional de Investigaciones Científicas y Técnicas [Buenos Aires] (CONICET), Institute of Integrative Biology (IBZ), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich), Department of Crop Physiology, Biological Sciences Department [Sacrameno], California State University [Sacramento], Ecogenics GmbH, Department of Population Health and Reproduction, Genomics Institute, Clemson University, Department of Seed Science and Technology [Zagreb], Faculty of Agriculture [Zagreb] (UNIZG), Laboratorio Genexpress, Università degli Studi di Firenze = University of Florence [Firenze] (UNIFI), Department of Forest Biology and Tree Improvement, Instituto di Genetica Vegetale, Consiglio Nazionale delle Ricerche (CNR), Key Lab of Animal Ecology and Conservation Biology, Chinese Academy of Sciences [Beijing] (CAS), Department of Ecology and Evolutionary Biology, Tulane University, College of Marine Life Sciences [Qingdao], Ocean University of China (OUC), Seoul National University [Seoul], Swedish University of Agricultural Sciences, Biogéosciences [Dijon] ( BGS ), Université de Bourgogne ( UB ) -AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Centre National de la Recherche Scientifique ( CNRS ), Nanjing Normal University, Estacion Biologica Doñana, Auke Bay Laboratories ( ABL ), Alaska Fisheries Science Center ( AFSC ), NOAA National Marine Fisheries Service ( NMFS ), National Oceanic and Atmospheric Administration ( NOAA ) -National Oceanic and Atmospheric Administration ( NOAA ) -NOAA National Marine Fisheries Service ( NMFS ), National Oceanic and Atmospheric Administration ( NOAA ) -National Oceanic and Atmospheric Administration ( NOAA ), University of Windsor, Conservation Genome Resource Bank for Korean Wildlife ( CGRB ), Agence Régionale de la Santé ( ARS ), University of Southern Mississippi, EWHA Womans University ( EWHA ), Department of Environmental Science, Policy and Management, State Key Laboratory of Marine Environmental Science, Department of Botany, University of Zagreb, Consejo Nacional de Investigaciones Científicas y Técnicas ( CONICET ), Eidgenössische Technische Hochschule [Zürich] ( ETH Zürich ), Department of Seed Science and Technology, Università degli Studi di Firenze [Firenze], Consiglio Nazionale delle Ricerche ( CNR ), Chinese Academy of Sciences [Beijing] ( CAS ), College of Marine Life Sciences, and Ocean University of China

Subjects
0106 biological sciences, Colias interior, computer.software_genre, 010603 evolutionary biology, 01 natural sciences, 03 medical and health sciences, food, Botany, Genetics, Ecology, Evolution, Behavior and Systematics, 030304 developmental biology, 0303 health sciences, [SDV.GEN]Life Sciences [q-bio]/Genetics, biology, Database, Salvia officinalis, biology.organism_classification, food.food, Dendrobium devonianum, Dendrobium loddigesii, Nothofagus obliqua, Sula nebouxii, Colias eurytheme, [ SDV.GEN ] Life Sciences [q-bio]/Genetics, Aspergillus clavatus, computer, Biotechnology
Abstract

5 pages; International audience; This article documents the addition of 411 microsatellite marker loci and 15 pairs of Single Nucleotide Polymorphism (SNP) sequencing primers to the Molecular Ecology Resources Database. Loci were developed for the following species: Acanthopagrus schlegeli, Anopheles lesteri, Aspergillus clavatus, Aspergillus flavus, Aspergillus fumigatus, Aspergillus oryzae, Aspergillus terreus, Branchiostoma japonicum, Branchiostoma belcheri, Colias behrii, Coryphopterus personatus, Cynogolssus semilaevis, Cynoglossus semilaevis, Dendrobium officinale, Dendrobium officinale, Dysoxylum malabaricum, Metrioptera roeselii, Myrmeciza exsul, Ochotona thibetana, Neosartorya fischeri, Nothofagus pumilio, Onychodactylus fischeri, Phoenicopterus roseus, Salvia officinalis L., Scylla paramamosain, Silene latifo, Sula sula, and Vulpes vulpes. These loci were cross-tested on the following species: Aspergillus giganteus, Colias pelidne, Colias interior, Colias meadii, Colias eurytheme, Coryphopterus lipernes, Coryphopterus glaucofrenum, Coryphopterus eidolon, Gnatholepis thompsoni, Elacatinus evelynae, Dendrobium loddigesii Dendrobium devonianum, Dysoxylum binectariferum, Nothofagus antarctica, Nothofagus dombeyii, Nothofagus nervosa, Nothofagus obliqua, Sula nebouxii, and Sula variegata. This article also documents the addition of 39 sequencing primer pairs and 15 allele specific primers or probes for Paralithodes camtschaticus.

Published
2010
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11. Nuclear DNA content and chromosome number in some diploid and tetraploid Centaurea (Asteraceae: Cardueae) from the Dalmatia region

Author

Dražena Papeš, Marija-Edita Šolić, Sonja Siljak-Yakovlev, Olivier Catrice, Spencer Brown, Ecologie Systématique et Evolution (ESE), Ecole Nationale du Génie Rural, des Eaux et des Forêts (ENGREF)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Institute 'Mountain and Sea', Franjevacki, Institute 'Mountain and Sea', Institut des sciences du végétal (ISV), Centre National de la Recherche Scientifique (CNRS), Division of Molecular Biology [Zagreb], Department of Biology [Zagreb], Faculty of Science [Zagreb], University of Zagreb-University of Zagreb-Faculty of Science [Zagreb], University of Zagreb-University of Zagreb, and Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Ecole Nationale du Génie Rural, des Eaux et des Forêts (ENGREF)

Subjects
0106 biological sciences, MESH: Genome, Plant, DNA, Plant, Croatia, Centaurea, Plant Science, Subspecies, 010603 evolutionary biology, 01 natural sciences, Chromosomes, Plant, MESH: Variation (Genetics), Centaurea ragusina, MESH: Ploidies, Polyploid, Botany, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, MESH: Chromosomes, Plant, MESH: DNA, Plant, Genome size, Ecology, Evolution, Behavior and Systematics, Ploidies, biology, MESH: Centaurea, Chromosome, Genetic Variation, General Medicine, biology.organism_classification, Nuclear DNA, MESH: Karyotyping, Karyotyping, Ploidy, genome size and base composition, basic chromosome number, flow cytometry, interspecific and intraspecific variation, Genome, Plant, MESH: Croatia, 010606 plant biology & botany
Abstract

Given the paucity of information about genome size in the genus Centaurea, nuclear DNA content of 15 Centaurea taxa, belonging to four subgenera and six different sections, has been investigated for the first time. The sample concerns 21 populations from the Dalmatia region of Croatia. The 2C DNA content and GC percentage were assessed by flow cytometry and chromosome number was determined using standard methods. Genome size of studied Centaurea ranged from 2C = 1.67 to 3.72 pg. These results were in accordance with chromosome number and especially with ploidy level that varies throughout this group; 2C DNA values ranged from 1.67 to 3.43 pg for diploid, and from 3.19 to 3.72 for polyploid taxa. No significant intraspecific variations of DNA amount were found between two subspecies of C. visiani and C. ragusina, nor between two varieties of C. gloriosa. However, some populations of C. glaberrima and C. cuspidata showed a significant difference in DNA amount. Three different basic chromosome numbers were observed in studied species (x = 9, 10, and 11). The most frequent basic number was x = 9. C. rupestris, C. ragusina ssp. ragusina, and C. r. ssp. lungensis possessed x = 10 and C. tuberosa x = 11. The species with a basic chromosome number of x = 9 had a small genome size and the smallest chromosomes (on average 0.09 to 0.12 pg/chromosome) but frequently present polyploidy. Centaurea ragusina ssp. ragusina and C. r. ssp. lungensis had a mean base composition 41.3 % GC.

Published
2005
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12. Nuclear DNA content, base composition, heterochromatin and rDNA in Picea omorika and Picea abies

Author

Srećko Jelenić, Sonja Siljak-Yakovlev, Spencer Brown, V. Stoian, M. Cerbah, Dražena Papeš, Vlatka Zoldoš, J. Coulaud, Ecologie Systématique et Evolution (ESE), Ecole Nationale du Génie Rural, des Eaux et des Forêts (ENGREF)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Department of Genetics, University of Bucharest (UniBuc), Institut des sciences du végétal (ISV), Centre National de la Recherche Scientifique (CNRS), Division of Molecular Biology [Zagreb], Department of Biology [Zagreb], Faculty of Science [Zagreb], University of Zagreb-University of Zagreb-Faculty of Science [Zagreb], University of Zagreb-University of Zagreb, and Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Ecole Nationale du Génie Rural, des Eaux et des Forêts (ENGREF)

Subjects
0106 biological sciences, medicine.medical_specialty, Heterochromatin, Locus (genetics), Picea, fluorochrome banding, flow cytometry, in situ hybridization, 18S-5.8S-26S and 5S rDNA, nucleolar organizer region, 01 natural sciences, 03 medical and health sciences, Botany, Genetics, medicine, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, Genome size, Ribosomal DNA, 030304 developmental biology, 0303 health sciences, biology, fungi, Cytogenetics, Picea abies, General Medicine, biology.organism_classification, Nuclear DNA, Picea omorika, Agronomy and Crop Science, 010606 plant biology & botany, Biotechnology
Abstract

Two closely related spruces, Picea abies and Picea omorika, a Balkan paleoendemic species, often share habitats, yet never hybridize in nature. The present study adresses their characteristics such as nuclear DNA content, base composition, heterochromatin and rDNA pattern. The genome size of P. abies was 10% larger than that of P. omorika when assessed by flow cytometry, respectively 2C=37.2 pg and 33.8 pg ; although when estimated as total chromosome length it was virtually the same. The heterochromatin Chromomycin-A (CMA)/DAPI fluorochrome banding patterns of both P. abies and P. omorika are given here for the first time. Simultaneous FISH (fluorescent in situ hybridization) using 18S-26S and 5S rDNA probes revealed 16 18S rDNA sites in P. omorika, 12 18S rDNA sites in P. abies, and a single 5S rDNA locus in both species. The genomes have about 41% GC. The number and position of CMA/DAPI bands and rDNA loci provide good chromosome markers to clarify the karyotypes of the two species.

Published
2002
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13. Pyridoxal hydrazonato molybdenum(<scp>vi</scp>) complexes: assembly, structure and epoxidation (pre)catalyst testing under solvent-free conditions

Author

Biserka Prugovečki, Tomislav Jednačak, Predrag Novak, Jana Pisk, Dubravka Matković-Čalogović, Višnja Vrdoljak, Dominique Agustin, Division of General and Inorganic Chemistry [Zagreb], Department of Chemistry [Zagreb], Faculty of Science [Zagreb], University of Zagreb-University of Zagreb-Faculty of Science [Zagreb], University of Zagreb-University of Zagreb, IUT 'A' - Département de Chimie [Castres], Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut Universitaire de Technologie - Paul Sabatier (IUT Paul Sabatier), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, Laboratoire de chimie de coordination (LCC), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie de Toulouse (ICT-FR 2599), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), and Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
chemistry.chemical_classification, Aqueous solution, 010405 organic chemistry, General Chemical Engineering, Inorganic chemistry, Hydrazone, chemistry.chemical_element, General Chemistry, 010402 general chemistry, Isonicotinic acid, 01 natural sciences, pyridoxal, polyoxomolybdate, Lindqvist anion, epoxidation, solvent-free, 0104 chemical sciences, Catalysis, chemistry.chemical_compound, chemistry, Cyclooctene, Molybdenum, Polymer chemistry, [CHIM.COOR]Chemical Sciences/Coordination chemistry, Selectivity, Pyridoxal
Abstract

International audience; Pyridoxal hydrazonato molybdenum(VI) complexes were prepared by the reaction of the corresponding hydrazone (H2L1 = pyridoxal isonicotinic acid hydrazone, H2L2 = pyridoxal benzhydrazone, H2L3 = pyridoxal 4-hydroxy benzhydrazone) and [MoO2(acac)(2)] under appropriate conditions. The complexes can be classified into three categories: mononuclear [MoO2(L1-3)(MeOH)], polynuclear [MoO2(L1-3)](n) and hybrid organic-inorganic compounds with the Lindqvist polyoxomolybdate [MoO2(HL1-3)](2)Mo6O19. A unique example of a cationic polymer assembly with Lindqvist anions is reported herein for the first time. The compounds were characterised by elemental, TG and DSC analyses and by spectroscopic (IR, UV-Vis, H-1, C-13 NMR) techniques. The crystal and molecular structure of the pyridoxal benzhydrazone H2L2, three mononuclear complexes [MoO2(L1-3)(MeOH)], and the Lindqvist-containing compounds [MoO2(HL2)](2)Mo6O19 center dot 2MeCN and (H4L1)Mo6O19 were determined by single crystal X-ray diffraction. All complexes were tested as (pre)catalysts for the epoxidation of cyclooctene under solvent-free conditions with the use of aqueous TBHP (TBHP tert-butylhydroperoxyde) as an oxidant. Optimal results in terms of conversion, selectivity, TOF and TON were obtained at very low (pre)catalyst loadings (0.05% [Mo] vs. substrate). The influence of the Linqvist anion on catalytic performance is discussed.

Published
2014
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