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Please use this identifier to cite or link to this item: http://purl.org/purl/4007

Title: Chemistry of molecular and supramolecular structures of vanadium(IV) and dioxygen-bridged V(V) complexes incorporating tridentate hydrazone ligands
Authors: Prathapachandra Kurup, M R
Sheeja, S R
Sarika, Sivakumar
Neema, Ani Mangalam
Edward, R T Tiekink
Keywords: Crystal structure
Hydrazones
Vanadium(IV/V) complexes
EPR spectra
Binuclear complexes
Supramolecular structures
Issue Date: 23-Jun-2009
Publisher: Elsevier
Abstract: Four hydrazone ligands: 2-benzoylpyridine benzoyl hydrazone (HBPB), di-2-pyridyl ketone nicotinoyl hydrazone (HDKN), quinoline-2-carbaldehyde benzoyl hydrazone (HQCB), and quinoline-2-carbaldehyde nicotinoyl hydrazone (HQCN) and four of their complexes with vanadyl salts have been synthesized and characterized. Single crystals of HBPB and complexes [VO(BPB)(l2-O)]2 (1) and [VO(DKN)(l2-O)]2 ½H2O (2) were isolated and characterized by X-ray crystallography. Each of the complexes exhibits a binuclear structure where two vanadium(V) atoms are bridged by two oxygen atoms to form distorted octahedral structures within cis-N2O4 donor sets. In most complexes, the uninegative anions function as tridentate ligands, coordinating through the pyridyl- and azomethine-nitrogen atoms and enolic oxygen whereas in complex [VO(HQCN)(SO4)]SO4 4H2O (4) the ligand is coordinated in the keto form. Complexes [VO(QCB)( OMe)] 1.5H2O (3) and 4 are found to be EPR active and showed well-resolved axial anisotropy with two sets of eight line pattern
Description: Inorganica Chimica Acta 362 (2009) 4191–4197
URI: http://dyuthi.cusat.ac.in/purl/4007
Appears in Collections:Dr. M.R.Prathapachandra Kurup

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