(NH4)Ga(HAsO4)2 and TlAl(HAsO4)2 - two new RbFe(HPO4)2-type M + M 3+ arsenates.
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ABSTRACT: The crystal structures of hydro-thermally synthesized (T = 493 K, 7-9 d) ammonium gallium bis-[hydrogen arsenate(V)], (NH4)Ga(HAsO4)2, and thallium aluminium bis-[hydrogen arsenate(V)], TlAl(HAsO4)2, were solved by single-crystal X-ray diffraction. Both compounds crystallize in the common RbFe(HPO4)2 structure type (R c) and share the same tetra-hedral-octa-hedral framework topology that houses the M + cations in its channels. One of the two Tl sites is slightly offset from its ideal position. Strong O-H⋯O hydrogen bonds strengthen the network.
SUBMITTER: Schwendtner K
PROVIDER: S-EPMC6176428 | biostudies-literature | 2018 Oct
REPOSITORIES: biostudies-literature
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