Synthesis, structure, and spectroscopic properties of vanadium(III) and -(IV) complexes containing hydridotris(pyrazolyl)borate ligands. 3

A series of vanadium(III) and -(IV) complexes of the type [L 2 V]BPh 4 , [LVCl 2 DMF], [LVOCIDMF], and [LVO(acac)] where L is either the anion of hydridotris(pyrazolyl)borate, HB(pz) 3 , or hydridotris(3,5-dimethylpyrazolyl)borate, HB(Me 2 pz) 3 , have been synthesized and characterized by elemental analysis, molar conductance, electrochemistry, magnetic, UV-vis, IR, and ESR techniques. In all cases, the metal ion is in a distorted octahedral environment