Two new RbGa-arsenates
- Author(s)
- Karolina Schwendtner, Uwe Kolitsch
- Abstract
The crystal structures of hydrothermally synthesized (T = 493 K, 7-9 d) rubidium gallium bis[hydrogenarsenate(V)], RbGa(HAsO 4)
2, and rubidium digallium arsenic(V) hexa[hydrogenarsenate(V)], RbGa 2 As(HAsO 4) 6, were solved by single-crystal X-ray diffraction. Both compounds have tetrahedral-octahedral framework topologies. The M + cations are located in channels of the respective framework. RbGa(HAsO 4)
2 crystallizes in the RbFe(HPO 4)
2 structure type (R c), while RbGa
2 As(HAsO
4)
6 adopts the structure type of RbAl
2 As(HAsO
4)
6 (R
c), which represents a modification of the RbFe(HPO
4)
2 structure type. In this modification, one third of the M
3+ O
6 octahedra are replaced by AsO 6 octahedra, and two thirds of the voids in the structure, which are usually filled by M + cations, remain empty to achieve charge balance.
- Organisation(s)
- Department of Mineralogy and Crystallography
- External organisation(s)
- Technische Universität Wien, Naturhistorisches Museum Wien (NHM)
- Journal
- Acta Crystallographica. Section E: Crystallographic Communications
- Volume
- E74
- Pages
- 1244-1249
- No. of pages
- 6
- ISSN
- 1600-5368
- DOI
- https://doi.org/10.1107/S2056989018011180
- Publication date
- 08-2018
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 105113 Crystallography
- Keywords
- ASJC Scopus subject areas
- Condensed Matter Physics, General Chemistry, General Materials Science
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/6b5ce852-9915-4a63-9af8-74bb1b73f535