K₂V₂O₂(AsO₄)₂.
The vanadium oxide arsenate with formula K₂V₂O₂(AsO₄)₂, dipotassium divanadium(IV) dioxide diarsenate, has been synthesized by solid-state reaction in an evacuated silica ampoule. Its structure is isotypic with K₂V₂O₂(PO₄)₂. The framework is built up from corner-sharing VO₆ octa-hedra and AsO₄ tetra-hedra, creating an infinite [VAsO₈](∞) chain running along the a- and c-axis directions. The K⁺ cations are located in hexa-gonal tunnels, which are delimited by the connection of the [VAsO₈](∞) chains.
Laboratoire Sciences des Matériaux, Faculté de Chimie, Université des Sciences et de la Technologie Houari Boumedienne, BP 32 El-Alia 16111 Bab-Ezzouar Alger, Algeria. belkhirisab@yahoo.fr
Sabrina
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Belkhiri
Djillali
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Mezaoui
Thierry
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Roisnel