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23 results on '"Mas-Balleste, Ruben"'

10. Fast [O.sub.2] binding at dicopper complexes containing Schiff-Base dinucleating ligands

Author

Company, Anna, Gomez, Laura, Mas-Balleste, Ruben, Korendovych, Ivan V., Ibas, Xavi, Poater, Albert, Parella, Teodor, Fontrodona, Xavier, Benet-Buchholz, Jordi, Sola, Miquel, Que, Lawrence, Jr., Rybak-Akimova, Elena V., and Costas, Miquel

Subjects
Ligands -- Chemical properties, Copper compounds -- Chemical properties, Schiff bases -- Analysis, Chemistry
Abstract

The preparation and characterization of a new family of dicopper(I) complexes containing Schiff-base ligands containing two tridentate binding sites linked by a xylyl spacer revealed the complexes to react very rapidly with [O.sub.2] to generate metastable [[[Cu.sup.III.sub.2][([mu]-O).sub.2](L)].sup.2} species.

Published
2007

13. Diverse evolution of [{Ph (sub)2 P(CH (sub)2) (sub)n PPh (sub)2}Pt(mu-S) (sub)2 Pt{Ph (sub)2 P(CH (sub)2) (sub)n PPh (sub)2}] (n= 2, 3) metalloligands in CH (sub)2 Cl (sub)2

Author

Mas-Balleste, Ruben, Capdevila, Merce, Champkin, Paul A., Clegg, William, Coxall, Robert A., Lledos, Agusti, Megret, Claire, and Gonzalez-Duarte, Pilar

Subjects
Chemistry, Inorganic -- Research, Phosphorus -- Physiological aspects, Ligands -- Physiological aspects, Carbon -- Physiological aspects, Hydrogen -- Physiological aspects, Sulfur -- Physiological aspects, Chlorine -- Physiological aspects, Chemistry
Abstract

Research has been conducted on the metalloligands. The study of nucleophilicity of these metalloligands toward CH (sub)2 Cl (sub)2 solvent is presented.

Published
2002

15. Iron-catalyzed olefin epoxidation in the presence of acetic acid: insights into the nature of the metal-based oxidant

Author

Mas-Balleste, Ruben and Que, Lawrence, Jr.

Subjects
Olefins -- Structure, Olefins -- Chemical properties, Oxidation-reduction reaction -- Analysis, Ultraviolet spectroscopy -- Analysis, Chemistry
Abstract

The iron complexes have catalyzed the oxidation of olefins by [H.sub.2][O.sub.2] to form epoxides and cis-diols. The studies have shown that epoxidation is mediated by [[(TPA)[Fe.sup.V](OOCC[H.sub.3])].sup.2+] (TPA = tris-(2-pyridylmethyl)amine) that is promoted by the protonation of the terminal oxygen atom of the hyperperoxide by the coordinated carboxylic acid.

Published
2007

16. Isomeric molecular rectangles resulting from self-assembly of dicopper complexes of macrocyclic ligands

Author

Company, Anna, Gomez, Laura, Valbuena, Josep Maria Lopez, Mas-Balleste, Ruben, Benet-Buchholz, Jordi, Costas, Miquel, and Llobet, Antoni

Subjects
Copper compounds -- Spectra, Copper compounds -- Structure, X-rays -- Diffraction, X-rays -- Research, Chemistry
Abstract

Dinuclear copper complexes containing hexaazacyclophane macrocyclic ligands react with the disodium salt of terephthalic acid resulting in the self-assembly of rectangular molecules with the general formula [(Cu2L)2(p-(O2-CC6H4CO2)2]X4, where X=CF3SO3 and ClO4. X-ray diffraction confirms their structure and ESI-MS analyses of solutions of the complexes exhibit cluster ions, which demonstrate that the cages are retained in solution.

Published
2006

17. ChemInform Abstract: One-Pot Asymmetric Synthesis of Cyclopropanes with Quaternary Centers Starting from Bromonitroalkenes under Aminocatalytic Conditions.

Author

Luis‐Barrera, Javier, Mas‐Balleste, Ruben, and Aleman, Jose

Subjects
*CYCLOPROPANE, *CYCLOPROPANE synthesis, *CHARTS, diagrams, etc.
Abstract

A novel approach towards the title compounds is presented, using bromonitrostyrenes as starting materials instead of the established synthesis with bromine-activated methylene derivatives. [ABSTRACT FROM AUTHOR]

Published
2016
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