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Title: Oxovanadium(IV) complexes with tridentate dibasic schiff base ligands and 2-(2’-pyridyl)benzimidazole
Authors: Mohanty, R N
Chakravortty, V
Dash, K C
Issue Date: May-1991
Publisher: NISCAIR-CSIR, India
Abstract: Several tridentate dibasic schiff base ligands with ONO donor set react with VO(OAc)2 in presence of the neutral bidentate ligand 2-(2'-pyridyl)benzimidazole (PBH) containing iNN donor set to form monomeric and six-coordin4ted complexes of the type [VO(SB) (PBH)] (H2SB = tridentate schiff bases). These are orange to brown coloured paramagnetic solids with normal magnetic moments. All the complexes exhibit a strong IR band at 960 cm -1 due to (V=O). Their EPR spectra are characterised by a single unresolved signal at g = 2.00 ± 0.02. ElectrochemicaI measurements are characterised by oxidation to vanadium(V) and reduction to vanadium(lII) at + 0.98 to + 1.26 V vs SCE and - 1.08 to - 1.50 V vs SCE, respectively. The thermo gravimetric measurements indicate the stability of the complexes and their stepwise thermal decomposition finally giving V2O5 as the end product.
Page(s): 454-456
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.30A(05) [May 1991]

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