Synthesis and crystal structure of bis(2-aminobenzimidazolium) catena-[metavanadate(V)]

Abstract

The structure of polymeric catena-poly[2-aminobenzimidazolium [[dioxidovanadium(V)]-μ-oxido]], {(C7H8N3)2[V2O6]} n , has monoclinic symmetry. The title compound is of interest with respect to anticancer activity. In the crystal structure, infinite linear zigzag vanadate (V2O6)2− chains, constructed from corner-sharing VO4 tetrahedra and that run parallel to the a axis, are present. Two different protonated 2-aminobenzimidazole molecules are located between the (V2O6)2– chains and form classical N—H...O hydrogen bonds with the vanadate oxygen atoms, which contribute to the cohesion of the structure.