A triazole, 2-(4-amino-5-mercapto-4H-1,2,4-triazol-3-yl)phenol, has been prepared from 2-hydroxybenzoic acid by routine multi-step chemical synthesis. It was then used in synthesizing two different Schiff base ligands (L1 and L2). Their respective oxovanadium (IV) complexes (ML1 ML2) were consequently synthesized characterized experimental techniques like elemental analysis, FTIR spectroscopy, ...

A variety of metal complexes have been reported that effect the oxidative cleavage of catechol fl —1 0 ]. These systems serve as models for the reaction catalyzed by catechol 1 ,2 -dioxygenase and protocatechuate 3,4-dioxygenase, enzymes in which the proposed mechanism of oxygen incorporation in­ volves substrate activation by the active site of ferric center [1 1 ]. In 1982, Otsuka et al. [6 ]...

The racemic oxovanadium(IV) salmmen complexes, [VO((rac)-(4-X-salmmen))] (X = C12C10C5 (1), C16 (2), and C18 (3); salmmen = N,N'-monomethylenebis-salicylideneimine) with "banana shaped" molecular structures were synthesized, and their ferroelectric properties were investigated. These complexes exhibit well-defined hysteresis loops in their viscous phases, moreover, 1 also displays liquid crysta...

The oxovanadium(IV) complex of formula [VOCl(H2biim)2]Cl (H2biim=2,2%-biimidazole) has been prepared and characterized by chemical analysis, single crystal X-ray diffraction, and IR and electronic spectroscopies. The crystal structure consists of chains of alternating [VOCl(H2biim)2] + cations and Cl anions, linked together by N H···Cl···H N hydrogen bonds. The vanadium atom lies in a very dist...

Over the last several decades, a large body of evidence has accumulated to suggest that organo-vanadium compounds (OVC) are more potent than inorganic vanadium salts in regulating hyperglycemia and insulin-resistance in rodent models of both type I and type II diabetes. Among these OVC, vanadium (IV) oxo bis(maltolato) (BMOV) was the first to be investigated for its higher potency over inorgani...

Treatment of tetrakis(diethylamido)zirconium(IV); [Zr(NEt2)4] with a series of β-ketoimines ({[RHN]C(CH3)=C(H)C(CH3)=O} where R is a functionalized side-chain; 4-(2-methoxyethylamino)pent-3-en-2-one, Hmeap; 4-(3-methoxypropylamino)pent-3-en-2-one, Hmpap; 4-(2-(dimethylamino)ethylamino)pent-3-en-2-one, Hdeap; 4-(3-(dimethylamino)propylamino)pent-3-en-2-one, Hdpap) leads to an amine substitution ...