New M⁺, M³⁺-arsenates - the framework structures of AgM³⁺(HAsO₄)₂ (M³⁺ = Al, Ga) and M⁺GaAs₂O₇ (M⁺ = Na, Ag).

ABSTRACT: The crystal structures of hydro-thermally synthesized silver(I) aluminium bis-[hydrogen arsenate(V)], AgAl(HAsO₄)₂, silver(I) gallium bis-[hydrogen arsenate(V)], AgGa(HAsO₄)₂, silver gallium diarsenate(V), AgGaAs₂O₇, and sodium gallium diarsenate(V), NaGaAs₂O₇, were determined from single-crystal X-ray diffraction data collected at room temperature. The first two compounds are representatives of the MCV-3 structure type known for KSc(HAsO₄)₂, which is characterized by a three-dimensional anionic framework of corner-sharing alternating M³⁺O₆ octa-hedra (M = Al, Ga) and singly protonated AsO₄ tetra-hedra. Inter-secting channels parallel

SUBMITTER: Schwendtner K 

PROVIDER: S-EPMC5418807 | biostudies-literature | 2017 May

REPOSITORIES: biostudies-literature