Search

Your search keyword '"Ciani, A."' showing total 120 results
Start Over Author "Ciani, A." Journal chemischer informationsdienst
120 results on '"Ciani, A."'

4. ChemInform Abstract: RHODIUM CARBONYL CLUSTERS WITH INTERSTITIAL NITROGEN ATOMS. PART 1. CRYSTAL AND MOLECULAR STRUCTURE OF THE BIS(TRIPHENYLPHOSPHINE)IMINIUM SALT OF THE ANION ENNEA-μ-CARBONYLHEXACARBONYL-μ6-NITRIDO-POLYHEDRO-HEXARHODATE(1-)

Author

R. Bonfichi, G. Ciani, Secondo Martinengo, and Angelo Sironi

Subjects
chemistry.chemical_classification, Salt (chemistry), chemistry.chemical_element, Iminium, General Medicine, Nitrogen, Ion, Rhodium, Crystal, chemistry.chemical_compound, chemistry, Polymer chemistry, Molecule, Triphenylphosphine
Published
1983

10. ChemInform Abstract: NITROSYL COMPLEXES OF RHENIUM. PART 2. CRYSTAL AND MOLECULAR STRUCTURE OF DIHYDRIDONITROSYLTRIS(TRIPHENYLPHOSPHINE)RHENIUM(I)-BENZENE(2 1)

Author

Gianfranco Ciani, Domenico Giusto, Mario Manassero, and Alberto Albinati

Subjects
Crystallography, chemistry.chemical_compound, chemistry, Ligand, Octahedral molecular geometry, Bent molecular geometry, chemistry.chemical_element, Molecule, Orthorhombic crystal system, General Medicine, Rhenium, Triphenylphosphine, Phosphine
Abstract

The crystal and molecular structure of the title compound has been determined by Patterson and Fourier methods from three-dimensional X-ray data collected by diffractometer. Crystals are orthorhombic, space group Pca21, with cell constants a= 25.069(6), b= 18.737(4), and c= 20.644(5)A. The structure has been refined by least-squares methods to R 0.048 for 2 938 independent reflections. The two crystallographically independent molecules in the asymmetric unit are very similar and exhibit markedly distorted octahedral geometry, with one phosphine ligand, the NO group, and the two hydrido-ligands (mutually cis) in equatorial positions, with the other two phosphine ligands axial, largely bent toward the hydrido H atoms. The three Re–P distances are 2.370(7), 2.439(7), and 2.403(8)A in the first molecule and 2.401(6), 2.498(8), and 2.386(8)A; in the second. The nitrosyil groups are linked linearly to the metal atoms, as NO+ ligands, with Re–N 1.77(2) and 1.73(2) and N–O 1.25(3) and 1.24(3)A; in the two molecules. The largest deviation from ideal geometry is shown by the axial P–Re–P angles [143.4(3) and 143.0(3)°].

Published
1977

11. ChemInform Abstract: RELATION BETWEEN STRUCTURES AND SPECTROSCOPIC PROPERTIES OF GROUP IIB METAL (M(CHELATE)X2) COMPLEXES (X = CL, BR, I). CRYSTAL AND MOLECULAR STRUCTURE OF (H2NCH2(CH3)2CCH2NH2)MX2 COMPLEXES (M = ZN, X = CL, BR; M = CD, X = BR)

Author

Gloria Rassu, Ledi Menabue, Gianfranco Ciani, Angelo Sironi, Franco Cariati, and Gian Carlo Pellacani

Subjects
Crystal, Metal, Crystallography, Group (periodic table), Chemistry, visual_art, visual_art.visual_art_medium, Molecule, Organic chemistry, Chelation, General Medicine
Published
1983

12. ChemInform Abstract: HIGH NUCLEARITY CARBONYL CLUSTERS OF RHODIUM. PART 2. CRYSTAL AND MOLECULAR STRUCTURE OF THE TETRAMETHYLAMMONIUM SALT OF DODECA-μ-CARBONYLDODECACARBONYLHYDRIDO-POLYHEDRO-TRIDECARHODATE(4-)-1-METHYL# PYRROLIDIN-2-ONE(1/3)

Author

Secondo Martinengo, G. Ciani, and Angelo Sironi

Subjects
chemistry.chemical_classification, Crystal, Tetramethylammonium, chemistry.chemical_compound, Crystallography, chemistry, Molecule, chemistry.chemical_element, Salt (chemistry), General Medicine, Pyrrolidin 2 one, Rhodium
Published
1981

13. ChemInform Abstract: INTERACTION OF METAL IONS WITH HUMIC ACID-LIKE MODELS. PART 4. SYNTHESIS, SPECTRAL PROPERTIES, AND CRYSTAL AND MOLECULAR STRUCTURE OF TETRAKIS(μ-2,6-DIMETHOXYBENZOATO)DIAQUADICOPPER(II) AND OF BIS(μ-2,6-DIMETHOXYBENZOATO)BIS(μ-ACETATO

Author

F. Cariati, Gianfranco Ciani, L. Strinna Erre, G. Micera, and P. Piu

Subjects
chemistry.chemical_classification, Metal ions in aqueous solution, Inorganic chemistry, Spectral properties, chemistry.chemical_element, General Medicine, Copper, Crystal, chemistry.chemical_compound, chemistry, Polymer chemistry, Molecule, Humic acid, Carboxylate
Published
1985

16. ChemInform Abstract: PREPARATION AND X-RAY CRYSTAL STRUCTURE OF TETRANITROSYLBIS-(TRIPHENYLPHOSPHINE)DI-IRIDIUM

Author

Gianfranco Ciani, Mirella Sansoni, Maria Angoletta, and Mario Manassero

Subjects
chemistry.chemical_compound, Crystallography, Chemistry, X-ray, chemistry.chemical_element, General Medicine, Crystal structure, Iridium, Triphenylphosphine
Abstract

Die Umsetzung des Iridiumtrihydrids (II) mit Stickstoffmonoxid in siedendem Tetrahydrofuran und in Gegenwart von.N-Methyl-N-nitroso-p-toluolsulfonamid (I) ergibt in hoher Ausbeute den Komplex (III).

Published
1974

18. ChemInform Abstract: Mixed Platinum - Rhodium Carbonyl Clusters. Synthesis, Reactivity, and Chemical Characterization of the [PtRh8(μ3-CO)3(μ-CO)9(CO)7]2-Anion and X-Ray Crystal Structure of Its Tetraethylammonium Salt

Author

G. Marturano, A. Fumagalli, G. Ciani, and Secondo Martinengo

Subjects
chemistry.chemical_classification, Tetraethylammonium, X-ray, Salt (chemistry), chemistry.chemical_element, General Medicine, Crystal structure, Ion, Rhodium, chemistry.chemical_compound, chemistry, Polymer chemistry, Reactivity (chemistry), Platinum
Published
1986

19. ChemInform Abstract: SYNTHESIS AND X-RAY CHARACTERIZATION OF THE (M6N(μ-CO)9(CO)6)-(M = COBALT, RHODIUM) ANIONS. A NEW CLASS OF METAL CARBONYL CLUSTER COMPOUNDS CONTAINING AN INTERSTITIAL NITROGEN ATOM

Author

Gianfranco Ciani, Secondo Martinengo, Brian T. Heaton, Joan Mason, and Angelo Sironi

Subjects
chemistry, Nitrogen atom, Metal carbonyl cluster, Inorganic chemistry, Polymer chemistry, X-ray, chemistry.chemical_element, General Medicine, Cobalt, Rhodium
Abstract

Die Reaktion von K,[Co6 (CO) ,5 ] mit NOBF4 in THF liefert eine Mischung aus Co(II), Co(CO)3NO, Spuren von Co4(CO)" und dem neuen Anion [Co6N(CO),5 1′, das mit 40-50% Ausb. als K-Salz abgetrennt wurde.

Published
1980

27. ChemInform Abstract: REACTIVITY OF THE UNSATURATED ANION TETRA-μ-HYDRIDODECACARBONYLTRIRHENATE(1-) TOWARD PHENOLS. CRYSTAL AND MOLECULAR STRUCTURES OF THE TETRAETHYLAMMONIUM SALTS OF THE TRIANGULAR CLUSTER ANION (RE3(μ-H)3(μ-OC6F5)(CO)10)- AND OF THE BINU

Author

Angelo Sironi, G. D'alfonso, G. Ciani, T. Beringhelli, and Maria Freni

Subjects
Tetraethylammonium, biology, Inorganic chemistry, General Medicine, biology.organism_classification, Medicinal chemistry, Ion, Crystal, chemistry.chemical_compound, chemistry, Cluster (physics), Tetra, Reactivity (chemistry), Phenols
Published
1985

30. ChemInform Abstract: NEW CARBIDE CLUSTERS IN THE COBALT SUB-GROUP. PART 6. CRYSTALLOGRAPHIC CHARACTERIZATION OF THE TETRAMETHYLAMMONIUM SALT OF THE PARAMAGNETIC ANION CARBIDOHEXA-μ-CARBONYLOCTACARBONYL-POLYHEDRO-HEXACOBALTATE(1-)

Author

Secondo Martinengo, V. G. Albano, Mirella Sansoni, Paolo Chini, and G. Ciani

Subjects
Tetramethylammonium, chemistry.chemical_classification, chemistry.chemical_element, Salt (chemistry), General Medicine, Carbide, Characterization (materials science), Ion, chemistry.chemical_compound, Crystallography, Paramagnetism, chemistry, Group (periodic table), Cobalt
Published
1980

33. ChemInform Abstract: STABILIZATION OF CARBONYL CLUSTERS BY A CARBIDE ATOM. SYNTHESIS AND CHARACTERIZATION OF CARBONOCTADECACARBONYLOCTACOBALTATE(2-) AND OF PARAMAGNETIC CARBONTETRADECACARBONYLHEXACOBALTATE(1-) ANIONS

Author

Gianfranco Ciani, Brian T. Heaton, Paolo Chini, Vincenzo G. Albano, Donatella Strumolo, Mirella Sansoni, and S. Martinengo

Subjects
Crystallography, Paramagnetism, Chemistry, Atom (order theory), General Medicine, Carbide, Characterization (materials science)
Published
1976

34. ChemInform Abstract: STEPWISE DEGRADATION OF THE UNSATURATED CLUSTER TETRAKIS(μ-HYDRIDO)DECACARBONYLTRIRHENATE(1-) BY REACTION WITH IODINE. CRYSTAL AND MOLECULAR STRUCTURES OF THE TETRAETHYLAMMONIUM SALTS OF THE NEW ANIONS BIS(μ-HYDRIDO)BIS(μ-IODO)DECACAR

Author

G. Ciani, Maria Freni, Angelo Sironi, Pierfrancesco Romiti, and G. D'alfonso

Subjects
Crystal, chemistry.chemical_compound, Tetraethylammonium, Chemistry, Polymer chemistry, Cluster (physics), Degradation (geology), chemistry.chemical_element, General Medicine, Photochemistry, Iodine
Published
1984

35. ChemInform Abstract: DIASTEREOISOMERIC CHIRAL DIPHOSPHINECHLORO(η5-CYCLOPENTADIENYL)RUTHENIUM(II) COMPLEXES AND THE CRYSTAL STRUCTURE OF (1,2-BIS(DIPHENYLPHOSPHINO)PROPANE-P,P′)CHLORO(η5-CYCLOPENTADIENYL)RUTHENIU# M

Author

Barbara Straub, Gianfranco Ciani, Angelo Sironi, Giambattista Consiglio, and Franco Morandini

Subjects
chemistry.chemical_compound, Cyclopentadienyl complex, Chemistry, Propane, Stereochemistry, chemistry.chemical_element, General Medicine, Crystal structure, Medicinal chemistry, Ruthenium
Published
1984

36. ChemInform Abstract: NEW CARBIDE CLUSTERS IN THE COBALT SUB-GROUP. PART 9. PREPARATION AND CRYSTALLOGRAPHIC CHARACTERIZATION OF DICARBIDODODECA-μ-CARBONYLDODECACARBONYL-POLYHEDRO-TRIDECACOBALTATE(4-) AS ITS TETRAKIS(BENZYLTRIMETHYLAMMONIUM) SALT (N(CH2PH)

Author

Dario Braga, V. G. Albano, G. Ciani, Secondo Martinengo, and Paolo Chini

Subjects
chemistry.chemical_classification, Crystallography, chemistry, Group (periodic table), chemistry.chemical_element, Salt (chemistry), General Medicine, Cobalt, Carbide, Characterization (materials science)
Published
1982

37. ChemInform Abstract: DIOXOMOLYBDENUM(VI) COMPLEXES OF QUADRIDENTATE CHIRAL SCHIFF BASES AND THE CRYSTAL AND MOLECULAR STRUCTURE OF DIOXO((2R)PROPANE-1,2-DIYLBIS(SALICYLIDENEIMINATO))MOLYBDENUM(VI)

Author

Gianfranco Ciani, Gian Maria Zanderighi, Michele Gullotti, Angelo Sironi, and Alessandro Pasini

Subjects
Crystal, chemistry.chemical_compound, chemistry, Propane, Molybdenum, Molecule, chemistry.chemical_element, General Medicine, Medicinal chemistry
Abstract

Die aquimolare Umsetzung von Dioxo-bis-[acetylacetona- to]-Mo(VI) mit den entsprechenden Schiffschen Basen aus Ethylendiamin oder Chiralen (R)- oder (R,R)-Diaminen in wasserfreiem Ethanol unter Ruckflus oder im Fall von (Ia) und (IIa) bei Raumtemp. liefert die oktaedrischen Komplexe (I) und (II) (kei- ′ ne Ausb.-Angaben).

Published
1981

42. ChemInform Abstract: SYNTHESIS AND CHEMICAL CHARACTERIZATION OF THE NEW ANIONS (RH3(μ3-E)2(CO)6)- (E = SULFUR OR SELENIUM). CRYSTAL AND MOLECULAR STRUCTURES OF TETRAPHENYLPHOSPHONIUM BIS(μ3-SULFIDO)-CYCLO-TRIS(DICARBONYLRHODATE(I)) AND TETRAMETHYLAMMONIUM

Author

Secondo Martinengo, D. Galli, Angelo Sironi, A. Fumagalli, Luigi Garlaschelli, and G. Ciani

Subjects
Crystal, Tris, Tetramethylammonium, chemistry.chemical_compound, chemistry, Inorganic chemistry, chemistry.chemical_element, General Medicine, Sulfur, Selenium, Characterization (materials science)
Published
1984

50. ChemInform Abstract: NEW CARBIDE CLUSTERS IN THE COBALT SUB-GROUP. PART 5. CRYSTALLOGRAPHIC CHARACTERIZATION OF DECA-μ-CARBONYL-CARBIDO-OCTACARBONYL-POLYHEDRO-OCTACOBALTATE(2-) IN ITS BIS(BENZYLTRIMETHYLAMMONIUM) SALT

Author

Mirella Sansoni, V. G. Albano, Paolo Chini, Secondo Martinengo, and G. Ciani

Subjects
chemistry.chemical_classification, Crystallography, chemistry, Group (periodic table), Salt (chemistry), chemistry.chemical_element, General Medicine, Cobalt, Deca, Carbide, Characterization (materials science)
Published
1978

Catalog

Books, media, physical & digital resources
See catalog results