THE SYNTHESIS AND CRYSTAL-STRUCTURES OF THE TETRAPHENYLARSONIUM SALTS OF [V2O3(NO3)(2)X(4)](2-),X=CL OR NO3

The title compounds, [Ph(4)As](2)[V2O3(NO3)(6)] 1, and [Ph(4)As](2)[V2O3Cl4(NO3)(2)] 2, crystallised from solution in the reaction of tetraphenylarsonium nitrate with VO(NO3)3 and VOCl3, respectively, and the crystal structures of the dianions show that they are structurally related; the octahedral coo rdination of all vanadium atoms is achieved by two oxygens, a bidentate nitrate and two other monodentate groups, and an unusual feature of compound 2 is the presence of both chlorine and nitrate as ligands on vanadium(v).