inorganic compounds
The crystal structure of barium decavanadate nonadecahydrate, Ba3[V10O28].19H2O, has been determined. The polyanion consists of ten distorted VO6 edge-sharing octahedra, with well established structure. There are two crystallographically independent decavanadate anions in the asymmetric unit, located around the centres of inversion at ½, 0, 0 and 0, ½, ½. Each of the three Ba2+ cations is surrounded by nine O atoms from water molecules and [V10O28]6- anions in a distorted square antiprism with one additional vertex.