RAJSEKHAR, Gudneppanavar; SAH, Ajay K.; RAO, Chebrolu P.; GUIONNEAU, Philippe; BHARATHY, Muktha; GURU ROW, T. N.

doi:10.1039/b303729k

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

RAJSEKHAR, Gudneppanavar
Bioinorganic Laboratory, Department of Chemistry

SAH, Ajay K.
Bioinorganic Laboratory, Department of Chemistry

RAO, Chebrolu P.
Bioinorganic Laboratory, Department of Chemistry

Langue

Article de revue

Ce document a été publié dans

Dalton Transactions. 2003 n° 15, p. 3126-3135

Royal Society of Chemistry

Résumé en anglais

A total of five dinuclear copper complexes were synthesized using 4,6-O-butylidene/ethylidene-N-(a-hydroxynaphthylidene/o-hydroxybenzylidene/5-bromo-o-hydroxybenzylidene)-B-D-glucopyranosylamine. . Upon recrystallisation from different solvents, viz., dmso/MeOH/pyridine, seven different dinuclear copper complexes were generated, wherein the geometry around one or both of the copper centers changes from square planar to square pyramidal due to the binding of solvent molecule as the fifth ligand. The ligands and their complexes were characterized by elemental analysis, 1H and 13C NMR, FT-IR, FABMS, UV-Vis, optical rotation, CD and magnetic susceptibility measurements. The 3D structures of all the seven complexes were established by single crystal XRD. All the complexes are neutral and dinuclear with the metal to the glycosylamine ratio being 1 1. Each glycosylamine acts as tridentate with di-negative charge and bridges between the two copper centers through the C-2-oxo group of the saccharide part and further the coupling between the copper centers is antiferromagnetic. At least four different types of Cu2O22+ core structures were identified depending upon the presence or absence of a fifth ligand at the Cu(II) center...< Réduire

Mots clés en anglais

Transition metal complexes

Crystal structure

Hydrogen bond

Molecular structure

Carbohydrates

Copper butylidene ethylidene hydroxynaphthylidene hydroxybenzylidene glycosylamine

Métadonnées

Licence d’utilisation du document

Bis-(µ-saccharide-C-2-oxo) dinuclear Cu(II) complexes of 4,6-O-butylidene/ethylidene-N-(a-hydroxynaphthylidene/o-hydroxybenzylidene/5-bromo-o-hydroxybenzylidene)-B-D-glucopyranosylamine: structural aspects and data correlations

Langue

Ce document a été publié dans

Résumé en anglais

Mots clés en anglais

DOI

Origine

Unités de recherche