Preparation and structural properties of new series of mixed-anion compounds: rare earth fluorosulfides

Autor: Alain Demourgues, H. Laronze, Pierre Gravereau, Alain Tressaud, P. Macaudière
Rok vydání: 2001
Předmět:
Zdroj: Journal of Fluorine Chemistry. 107:215-221
ISSN: 0022-1139
DOI: 10.1016/s0022-1139(00)00361-4
Popis: Rare earth fluorosulfides with the following compositions: LnSF and Ln 2 AF 4 S 2 have been prepared by solid state routes. These structures can be described as a stacking of fluoride-based slabs ([Ln 2 F 2 ] 4+ in LnSF and [Ln 2 AF 4 ] 4+ in Ln 2 AF 4 S 2 ) and double layers [S 2 ] 4− . The fluoride blocks are related to fluorite-type structure. The relative compactness of the fluoride blocks leads to a relaxation of the LnS bond lengths.
Databáze: OpenAIRE