title: K(1.65)V(1.78)W(0.22)O(2)(AsO(4))(2).
abstract: The title potassium vanadium tungsten bis-(arsenate oxide) was synthesized by a solid-state reaction at 973 K. The crystal structure is isotypic with KVOPO(4) and contains a [MVAs(2)O(10)](∞) framework built up from single MO(6) (M = V+W) octa-hedra sharing corners with single VO(6) octa-hedra and AsO(4) tetra-hedra. This structure shows the existence of infinite [VAsO(8)](∞) and [MAsO(8)](∞) chains running along the a and c directions, respectively. All atoms are located on general positions. The metal position M is statistically occupied by 78% V and 22% W.
authors.affiliation: Université Houari-Boumedienne, Faculté de Chimie, Laboratoire Sciences des Matériaux USTHB, BP 32 El-Alia, 16111 Bab-Ezzouar, Alger, Algérie.
authors.forename: Sabrina
authors.initials: S
authors.lastname: Belkhiri
authors.forename: Mohammed
authors.initials: M
authors.lastname: Kars
authors.forename: Djillali
authors.initials: D
authors.lastname: Mezaoui