The synthesis and crystal structures of the tetraphenylarsonium salts of [V2O3(NO3)2X4]2–, X = Cl or NO3

Abstract

The title compounds, [Ph₄As]₂[V₂O₃(NO₃)₆]1, and [Ph₄As]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 coordination 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).