Vanadyl VO(II) with o-phenylenediamine complexes: preparation and spectral characterization

Abstract

Two dinuclear vanadyl VO(II) complexes with o phenylenediamine (OPD) ligand have been prepared. The complexes have been characterized by different techniques such as FT-IR, UV-Vis and mass spectroscopy, magnetic susceptibility and molar conductivity. The obtained FTIR data show that the o phenylenediamine ligand coordinated from two nitrogen atoms of amine groups. The mass spectral data show that the vanadyl VO(II) complexes are dinuclear and the o-phenylenediamine ligand binds the two vanadium atoms as a bridge ligand. The magnetic susceptibility measurments indicate that the complexes are paramagnetic. UV-Vis measurements show the peaks of the charge transfer and the metal (d-d) transitions. From all spectroscopic data, square pyramidal structures have been proposed for the complexes.