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RbFe(HAsO₄)₂ and TlFe(HAsO₄)₂, two new hydrogenarsenates adopting two closely related structure types.

ABSTRACT: Rubidium iron bis-[hydrogen arsenate(V)], RbFe(HAsO₄)₂, and thallium iron bis-[hydrogen arsenate(V)], TlFe(HAsO₄)₂, were grown under mild hydro-thermal conditions (T = 493 K, 7 d). RbFe(HAsO₄)₂ adopts the RbFe(HPO₄)₂ structure type (space group Rc), while TlFe(HAsO₄)₂ crystallizes in the (NH₄)Fe(HPO₄)₂ structure type (space group P ). Both compounds have tetra-hedral-octa-hedral framework topologies. The M⁺ cations are located in channels of the respective framework and are disordered in TlFe(HAsO₄)₂, which may suggest that the M⁺ cations can move in the channels.

SUBMITTER: Schwendtner K

PROVIDER: S-EPMC6002822 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature

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RbFe(HAsO4)2 and TlFe(HAsO4)2, two new hydrogenarsenates adopting two closely related structure types.

Schwendtner Karolina K Kolitsch Uwe U

Acta crystallographica. Section E, Crystallographic communications 20180501 Pt 6

Rubidium iron bis-[hydrogen arsenate(V)], RbFe(HAsO4)2, and thallium iron bis-[hydrogen arsenate(V)], TlFe(HAsO4)2, were grown under mild hydro-thermal conditions (T = 493 K, 7 d). RbFe(HAsO4)2 adopts the RbFe(HPO4)2 structure type (space group Rc), while TlFe(HAsO4)2 crystallizes in the (NH4)Fe(HPO4)2 structure type (space group P ...[more]

PMID: 29951226

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