Crystal structure of NaGaTe<sub>2</sub>O<sub>6</sub>
- Author(s)
- Ronald Miletich, Franz Pertlik
- Abstract
The crystal structure of hydrothermally synthesized NaGaTe2O6 [space group Pcab; a 7.8402(4), b 10.3265(5), c 13.3696(7) .ANG.; Z = 8] was detd. from single-crystal x-ray data and refined to R = 0.031 for 2338 reflections. The at. arrangement can formally be described as a layer structure dominated by a simple AB stacking sequence of corrugated Te(1)nTe(2)nO6n and NanGanO6n layers along the c-axis. The NanGanO6n layers are built up from GaO6 octahedra and NaO7 polyhedra which are connected to both Ga2O10 dimers and infinite [NaO5]n chains parallel to [100]. The tetravalent Te atoms exhibit typical intermediate [3+2] and [3+1] coordination for Te(1) and Te(2), resp.: the 1-sided 3-fold coordination (Te-O: 1.84 to 1.92 .ANG.) is extended by addnl. Te-O bonds (2.56 to 2.69 .ANG.). Based on simple bond-valence considerations, a relation between the variable Te4+Ox coordination, the d.p., and the influence of individual polyhedron types linked to the TexOy unit is pointed out and discussed for NaGeTe2O6.
- Organisation(s)
- Department of Mineralogy and Crystallography
- External organisation(s)
- Universität Bayreuth
- Journal
- Journal of Alloys and Compounds
- Volume
- 268
- Pages
- 107-111
- No. of pages
- 5
- ISSN
- 0925-8388
- DOI
- https://doi.org/10.1016/S0925-8388(97)00623-3
- Publication date
- 1998
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 105113 Crystallography, 104011 Materials chemistry
- Keywords
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/crystal-structure-of-nagate2o6(10a41bf8-7a16-49c0-9f7d-e90b7fb39480).html