title: Li2PtF6 revisited.
abstract: In comparison with previous stucture determinations of Li2PtF6, dilithium hexa-fluorido-platinate(IV) [Graudejus et al. (2000 ▶). Inorg. Chem. 39, 2794-2800; Henkel & Hoppe (1968 ▶). Z. Anorg. Allg. Chem. 359, 160-177], the current study revealed the Li atom to be refined with anisotropic displacement parameters, thus allowing for a higher overall precision of the model. Li2PtF6 adopts the trirutile structure type with site symmetries of 2.mm, m.mm, ..m and m.2m for the Li, Pt and the two F sites. The Pt-F distances in the slightly distorted PtF6 octa-hedron are essentially similar with 1.936 (4) and 1.942 (6) Å, and the equatorial F-Pt-F angles range from 82.2 (2) to 97.8 (2)°. The Li-F distances in the somewhat more distorted LiF6 octa-hedron are 1.997 (15) and 2.062 (15) Å, with equatorial F-Li-F angles ranging from 76.3 (7) to 99.71 (17)°.
authors.affiliation: AG Fluorchemie, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany.
authors.forename: Florian
authors.initials: F
authors.lastname: Kraus
keywords: Lithium; crystal structure; fluoride; platinum; trirutile-type