Synthesis, Crystal Structures and Catalytic Oxidation Property of Two Oxidovanadium(V) Complexes with Schiff bases

Abstract

Two new oxidovanadium(V) complexes, [VO₂L¹] (1) and [V₂O₂(μ-O)₂L²)] (2), where L¹ and L² are the deprotonated form of 5-bromo-2-(((2-(pyrrolidin-1-yl)ethyl)imino)methyl)phenol (HL¹) and 5-bromo-2-(((2-((2-hydroxyethyl)amino)ethyl)imino)methyl)phenol (HL²), respectively, have been synthesized and structurally characterized by physico-chemical methods and single crystal X-ray determination. X-ray analysis indicates that the V atom in complex 1 is in square pyramidal coordination, and those in complex 2 are in octahedral coordination. Crystal structures of the complexes are stabilized by hydrogen bonds. The catalytic property for epoxidation of styrene by the complexes was evaluated.