A vanadyl complex bearing an ONO isonicotinohydrazone ligand: XRD, spectroscopy, and catalytic sulfoxidation

A new vanadium complex was prepared by reacting [VO(acac)2] with an ONO isonicotinohydrazone ligand. Various techniques including UV-Vis, FT-IR, CHN, and SC-XRD were utilized to characterize the synthesized complex. The data collected from the diffraction study showed that the vanadium ion is hexa-coordinated and has a distorted octahedral geometry. The VV ion is coordinated to O,N,O donor sites of the liagnd and a methoxide O atom in the equatorial positions, while methanolic and oxo O atoms occupy the axial sites. Moreover, the catalytic activity of the vanadium complex was studied in the sulfoxidation reaction of different sulfides using hydrogen peroxide.