Some Penta-Coordinated Complexes of Oxovanadium(IV) with 4[N-(3,4,5-Trimethoxy Benzylidene) Amino] Antipyrine

Abstract

In the present note, a series of penta-coordinated complexes of VO²⁺ with 4[N-(3,4,5-trimethoxy benzylidene) amino] antipyrine (TMBAAP) with the general composition VOX₂.n(TMBAAP) (X = Cl^–, Br^–, I^–, NO₃^–, or NCS, n = 1; X = ClO₄^–, n = 2) have been synthesized and characterized. The IR data reveal the bidentate nature (N,O) of the ligand. The probable coordination number of the central metal ion is found to be five. Thermal stabilities of the complexes have been studied through thermogravimetric analysis.