Magneto-structural correlation for binuclear octahedral vanadium(IV)-oxo complexes. Synthesis, structure and magnetic properties of a V-IV O2+ complex with a new ligand derived from glycine

The synthesis of a new ligand, H(3)BBAC (N,N-bis(2-hydroxybenzyl)aminoacetic acid) and its first (VO2+)-O-IV complex, [Et3NH](2)[O=V(BBAC)](2) (1), are presented in order to model the active site of vanadium transferrins. Spectroscopic (EPR, UV-VIS), magnetic properties and crystal data of 1 are discussed and a new magneto-structural correlation turns out to be relevant for binuclear RO-bridging octahedral vanadium(IV)-oxo complexes.