Novel vanadium(iii/iv) compounds with the diamidate ligand 1,2-bis(2-pyridinecarboxamide)benzene (H2bpb)

Abstract

Reaction of the diamidate ligand H ₂ bpb with VCl ₃ depending on the base affords either the compound NHEt ₃ {trans-[V ^III Cl ₂ (bpb)] } 1 or [V ^III (Hbpb) ₃ ]·2CHCl ₃ 2; aerial oxidation–hydrolysis of 1 gives the dimeric species [VOCl(Hbpb)] ₂ ·2MeNO ₂ 3; the X-ray crystal structures of 1, 2 and 3 are reported.