Synthesis, structure and reactivity of oxovanadium(IV) schiff base complexes

Abstract

Oxovanadium(IV) complexes with schiff bases, viz., N,N'-bis(2-hydroxy benzylidene) benzidine (HBB), <i>N,N'-</i>bis(2<i>-</i>hydroxy benzylidine)-<i>p</i>-phenylenediamine (HBP) and cinnamylidene-2-aminophenol (CAPh) have been synthesized and<i> </i>characterized by elemental analysis, molar conductance, electronic spectra, FTIR, ¹H-NMR, ESR, FAB mass, thermal and<i> </i>magnetic susceptibility measurements. FAB mass and thermal data show degradation pattern of the complexes. Square<i> </i>pyramidal geometry has been proposed for the complexes. The reactivity and substitution behaviour of the synthesized<i> </i>complexes have also been studied. Solid-state A.C. electrical conductivity studies reflect semiconducting nature of the

complexes. The crystal system, lattice parameters, unit cell volume and number of molecules in unit cell of [VO(HBB)(H₂O)₂] complex have been determined by XRD, suggesting that the [VO(HBB)(H₂O)₂] complex crystallizes as tetragonal crystal system.