Oxovanadium(IV) complexes of the type [VO(mac)]SO4 , (where mac = tetraaza macrocyclic ligands derived by condensation of furil with 1,4-diaminobenzene or 3,4-diaminopyridine and their reaction with βdiketones) have been prepared using vanadyl ion as kinetic template. Tentative structures of the complexes have been proposed on the basis of elemental analysis, infrared, e.s.r. and electronic dat...

The oxovanadium(IV) complexes LVO and L'VO (L = dianion of 5,14-dihydro-6,8,15.17tetramethyldibenzo[b.i][l,4.8,ll]tetraazacyclotetradecine. H2L. and L' = dianion of 5.14-dihydro-6,15-dimethyl-8,17-diphenyldibenzo[b,i][l,4,8,1 l]tetraazacyclotetradecine, H2L') are redox active as indicated by cyclovoltammetric measurements and confirmed by preparative methods: Reversible oxidation to the corresp...

SUMMARY. It has been recently found that bis(pyrro1idine-N-carbodithioato)-oxovanadium (IV) is an orally active insulin-mimetic complex. In order to facilitate the characterization and rapid identification of this interesting drug, we have recorded its infrared and Raman spectra and made an assignment of its most characteristic bands. On the basis of this analysis some structural peculiarities ...

The title compound {systematic name: bis[1,4(η(5))-cyclo-penta-dien-yl]hexa-kis(μ-diethyl phosphito)-1:2κ(6)P:O;3:4κ(6)O:P-μ-ox-alato-2:3κ(4)O(1),O(2):O(1'),O(2')-dioxido-2κO,3κO-1,4-dicobalt(III)-2,3-divanadium(IV)}, [Co(2)V(2)(C(5)H(5))(2)(C(2)O(4))(C(4)H(10)O(3)P)(6)O(2)], is an oxalate-bridged dinuclear complex of oxovanadium(IV). The geometric center of the dimer lies on an inversion cente...

The syntheses and spectroscopic characterization of two 1,2,4-triazole-based oxovanadium(V) complexes are reported: 1- [VO2L1]- and 2 [(VOL2)2(OMe)2] (where H2L1 = 3-(2'-hydroxyphenyl)-5-(pyridin-2' '-yl)-1H-1,2,4-triazole, H3L2 = bis-3,5-(2'-hydroxyphenyl)-1H-1,2,4-triazole). The ligand environment (N,N,O vs O,N,O) is found to have a profound influence on the properties and reactivity of the c...

New Oxovanadium(IV) and zirconium (IV) complexes were synthesized with tridentate ligand and characterized by elemental analysis, molar conductance measurements, molecular weight determinations, IR, electronic, and H NMR studies. The Oxovanadium(IV) complex is non-electrolyte whereas zirconium(IV) complex is 1:2 electrolytes in nature and may be formulated as[(VOL)2SO4] and [ZrL2]Cl2 respective...

Based on the potential redox and catalytic ability of oxovanadium complexes, our goal was to characterize physical properties two such complexes be used as mediators for laccase. Computational studies, TD-DFT calculations docking simulations were performed elucidate interaction between laccase anionic (aquabis(oxalato)oxidovanadate(IV) (1) bis(oxalato)dioxidovanadate(V)) (2), respectively. Elec...