Modeling Vanadium Bromoperoxidase: Synthesis, Structure, and Spectral Properties of Vanadium(IV) Complexes with Coordinated Imidazole

A series of vanadium(IV)-SALIMH complexes [HSALIMH=4-(2-(salicylideneamino)ethyl)imidazole] have been synthesized and characterized by X-ray crystallography, electron paramagnetic resonance, infrared, and visible spectroscopy, and mass spectrometry. The compounds VO(SALIMH)ACAC-MeOH (1), VO(SALIMH)SAL-MeOH (SAL is the anion of salicylaldehyde) (2), and VO(SALIMH) 2 .3EtOH (3) represent the first fully characterized vanadium(IV) compounds with imidazole in their coordination sphere