An oxovanadium(IV) complex derived from l-histidine, [V2O2(l-his)2(2,2′-bipy)2] · [C2H6O2 · (2,2′-bipy)]: Hydrothermal synthesis, crystal structure and magnetic properties

A dinuclear oxovanadium compound [V2O2(l-his)2(2,2′-bipy)2] · [C2H6O2 · (2,2′-bipy)] was synthesized under hydrothermal condition and characterized by single-crystal X-ray diffraction. X-ray crystallography revealed that each vanadium center is six coordinated and adopts a distorted octahedral structure. IR spectroscopy, ESR spectrum and magnetic susceptibility data for this compound are given. X-band ESR spectroscopy of the sample indicated the existence of vanadium(IV) ions in the compound. The temperature dependent magnetic susceptibility data showed the presence of a ferromagnetic coupling between the two V(IV) ions in the range 4–180 K.