Dioxovanadium complexes

Domination of the S-diastereomers for the dioxovanadium(V) Schiff base complexes being derivatives of aromatic orf/zo-hydroxyaldehydes or ketones and (S)-(+)-2-(aminomethyl)-pyrrolidine [35] was shown and the molar ratio of the diastereomers was determined by means of integration of the H signals.85... 

Stability Constants (Log K ) for Hydroxypyronate and Hydroxy-pyridinonate Complexes of Oxovanadium(IV), Dioxovanadium(V), and Dioxouranium(VI), with Values for Cu and Zn + for Comparison... 

Scheidt, W.R., C. Tsai, and J.L. Hoard. 1971. Stereochemistry of dioxovanadium(V) complexes, I. The crystal and molecular structure of triammonium bis(oxalato)diox-ovanadate(V) dihydrate. J. Am. Chem. Soc. 93 3867-3872. 

Hamstra, B.J., G.J. Colpas, and V.L. Pecoraro. 1998. Reactivity of dioxovanadium(V) complexes with hydrogen peroxide Implications for vanadium haloperoxidase. Inorg. Chem. 37 949-955. 

Plass, W., A. Pohlmann, and H.-P. Yozgatli. 2000. /V-Salicylidenehydrazides as versatile tridentate ligands for dioxovanadium(V) complexes. J. Inorg. Biochem. 80 181-183. 

Asgedom, G., A. Sreedhara, J. Kivikoski, E. Kolehmainen, and C.P. Rao. 1996. Structure, characterization and photoreactivity of monomeric dioxovanadium(V) Schiff-base complexes of trigonal-bipyramidal geometry. J. Chem. Soc., Dalton Trans. 93-97. 

Clague, M.J. and A. Butler. 1995. On the mechanism of cw-dioxovanadium(V)-catalyzed oxidation of bromide by hydrogen peroxide Evidence for a reactive, binu-clear vanadium(V) peroxo complex. J. Am. Chem. Soc. 117 3475-3484. 

The decavanadate ion is a complex species with chemical formula VioOfs. It reacts with an excess of acid to form the dioxovanadium ion, VOj, and water. Write a balanced chemical equation for this reaction. In what oxidation state is vanadium before and after this reaction What vanadium oxide has the same oxidation state ... 

The first example of a /r-oxo-bis(/r-carboxylato)dioxovanadium(IV,V) complex has been reported (68).380 Coupling reactions have been used in the preparation of ligands containing amide groups. One condensation reaction led to the first structurally characterized, deprotonated vanadium(V)-amide product (69).381 This coordination mode was later observed for other amide... 

Three cis-dioxovanadium(V) complexes with similar N-salicylidenehy-drazide ligands modeling hydrogen bonding interactions of vanadate relevant for vanadium haloperoxidases are studied by solid-state NMR spectroscopy. Their parameters describing the quadrupolar and chemical shift anisotropy interactions are determined both experimentally and theoretically using DFT methods. 

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