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Title: Alkali Metal (Na+ and K+)-Mediated Supramolecular Assembly of Oxovanadium(V) Complexes: Synthesis and Structural Characterization
Authors: Dinda, R
Majhi, P K
Sengupta, P
Pasayat, S
Ghosh, S
Falvello, L R
Mak, T C W
Keywords: Tridentate ONO donor ligand
Oxovanadium(V) complexes
X-ray crystal structure
Alkali metal ion mediated supramolecular assembly
Issue Date: 2010
Publisher: Elsevier
Citation: Journal of Polyhedron, Volume 29, Issue 1, 13 January 2010, Pages 248-253
Abstract: The syntheses and characterization of alkali metal complexes [{VO2L}M(H2O}n] (1 & 2) [M = Na+ (1), K+ (2)] of anionic cis-dioxovanadium(V) species (LVO2 -) of the Schiff base 2-hydroxybenzoylhydrazone of 2-hydroxybenzaldehyde have been reported. The number of coordinated water molecules in [{VO2L}M(H2O}n] decreases as the charge density of the alkali metal ion decreases (n = 5 for Na+ and 1 for K+). These compounds represented M+-mediated supramolecular assembly [{VO2L}M(H2O}n]∝ with an infinite polymeric structure containing an alternating array of cis-dioxo vanadium(V), [VO2L]-, units and aquated metal ion centres, as confirmed by X-ray crystallographic investigation of both. All the compounds are characterized by elemental analysis, IR, UV-Vis and NMR spectroscopy.
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