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Molecular structure of a mono-peroxo vanadium(V) complex formed by D ,L-lactic acid

Demartin, Francesco and Biagioli, Marco and Strinna Erre, Liliana and Panzanelli, Angelo and Micera, Giovanni (2000) Molecular structure of a mono-peroxo vanadium(V) complex formed by D ,L-lactic acid. Inorganica Chimica Acta, Vol. 299 (1), p. 123-127. ISSN 0020-1693. Article.

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DOI: 10.1016/S0020-1693(99)00474-0


The peroxo complex formed by vanadium(V) in the presence of D ,L-lactic acid (H2lact) as heteroligand, K2[{VO(O2)(lact)}2], is described. A single-crystal X-ray diffraction study indicates that the ligand behaves as a bidentate chelator adopting the (O-, COO-) donor set. The complex has a dinuclear core based on the V2O2 cyclic arrangement arising from two vanadium(V) atoms sharing the hydroxyl oxygens of two ligands. The coordination sphere of each vanadium includes two hydroxyl oxygens, an oxygen atom from a carboxylate group, an oxo ligand and two peroxo oxygens. The geometry at the metal ion is severely distorted and, in the ideal limit, it could be described as a trigonal bipyramid, in which one of the equatorial bonds corresponds to the axis joining the vanadium atom and the centre of the peroxo group. A strikingly short interatomic O---O distance, 1.35 Å, is measured for the peroxo group, suggesting both σ- and π-donor ability in the bonding to the metal ion.

Item Type:Article
ID Code:1433
Uncontrolled Keywords:Crystal structures, vanadium complexes, peroxo complexes, lactic acid complexes
Subjects:Area 03 - Scienze chimiche > CHIM/03 Chimica generale e inorganica
Area 03 - Scienze chimiche > CHIM/01 Chimica analitica
Divisions:001 Università di Sassari > 01 Dipartimenti > Chimica
Additional Information:Pubblicato online l'11 febbraio 2000.
Deposited On:18 Aug 2009 10:05

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