The present results show that indeed the structural data allow us to decide which vanadium centers must be considered formally as + 5 and which as + 4, at least with respect to the limit of strong localization. In fact, if the V3 and V3a centers were to be considered as vanadium(Iv), or as intermediates between vanadium(rv) and vanadium(v), they would be involved in several strong p o x 0 bridg...

Schiff bases have been synthesized by the reaction of triazole containing primary amine with aromatic carbonyl compounds. The prepared, act as ligand when these are made in contact oxovanadium (VO2+) ion. Some new mononuclear oxovanadium(IV) complexes base ligands vanadyl sulphate (VOSO4.xH2O) and analyzed different spectroscopic methods; [fourier-transform infrared (FTIR), ultraviolet-visible ...

normal 0 false false false en-us x-none ar-sa microsoftinternetexplorer4 background : it has been shown that bispectral index (bis) may reduce during spinal anesthesia. the aim of this study was comparing bis scores during spinal anesthesia using hyperbaric bupivacaine alone or with intrathecal or intravenous fentanyl for cesarean section. methods : in this double-blind randomized controlled cl...

The aim of the present study is to synthesize the oxovanadium complex of the V3+ ion with isatin sciff bases. Spectroscopic methods have been used to confirm these models of complexation and to understand the structures of the species formed in methanolic solution. We also have isolated a complex of Vanadium (III) with isatin schiff bases in the solid phase.