Acta Cryst. (2008). C64, i57-i61 [ doi:10.1107/S0108270108017150 ]
Abstract: In the course of a general study of oxyfluorotellurates(IV), materials likely to exhibit interesting nonlinear optical properties, the crystal structures of the new phases scandium tellurium trioxide fluoride, ScTeO3F, and indium tellurium trioxide fluoride, InTeO3F, belonging to two different structural types and also differing from that of the recently published MTeO3F (M = Fe, Ga and Cr) series, have been determined. The ScTeO3F structure can be described as an intergrowth of two different layers of scandium octahedra connected via isolated TeO3 groups. The scandium ions occupy two different sites with ..2 and 2.. site symmetry. The Te, F and O atoms are on general positions of the Pnna space group. The InTeO3F structure consists of zigzag sheets of InO5F octahedra. The In, Te, O and F atoms are all located on general positions of the P21/a space group. TeO3F polyhedra are inserted between the zigzag sheets of InO5F octahedra and with them form double (InTeO3F)n layers. Therefore, InTeO3F is a true layer structure, unlike the previous types. In all these phases, the electronic lone pair of the TeIV atom is stereochemically active and a full O/F anionic ordering is observed.
Formula: ScTeO3F and InTeO3F
 |   Structure factor file (CIF format) (49.5 kbytes) |
| Structure factor file (CIF format) (57.5 kbytes) |
To open or display or play some files, you may need to set your browser up to use the appropriate software. See the full list of file types for an explanation of the different file types and their related mime types and, where available links to sites from where the appropriate software may be obtained.
The download button will force most browsers to prompt for a file name to store the data on your hard disk.
Where possible, images are represented by thumbnails.
Copyright © International Union of Crystallography
IUCr Webmaster