Evidence of a centre of symmetry: redetermination of Ni2.60Te2 from single-crystal data

✍ Scribed by Gulay, L. D. ;Daszkiewicz, M. ;Pietraszko, A.

• Book ID: 104492004
• Publisher: International Union of Crystallography
• Year: 2007
• Tongue: English
• Weight: 453 KB
• Volume: 63
• Category: Article
• ISSN: 1600-5368
• DOI: 10.1107/s1600536807050568

✦ Synopsis

The crystal structure of the title compound, nickel telluride, with composition Ni~2.60~Te~2~, has been the subject of a previous investigation based on X-ray powder data, when a slightly different composition of Ni~2.58~Te~2~ was determined [Gulay & Olekseyuk (2004). J. Alloys Compd, 376, 131–138]. In contrast to the previous refinement in the space group Pmc__2~1~, the redetermination from single-crystal data reveals a centre of symmetry and the structure was refined in the space group Pnma with improved precision for the atomic coordinates and interatomic distances. The structure can be described as a c × a × (3__a)^1/2^ distorted orthorhombic variant of the hexagonal Ni~1.10~Se~0.16~Te~0.74~ structure. All atoms are situated on mirror planes.