Hochdruckmodifikationen der Lanthaniden(III)sulfide Ln2S3 (Ln = Lu-Ho, Y) mit U2S3-Struktur / High Pressure Modifications of the Rare Earth Sulfides Ln2S3 (Ln = Lu-Ho, Y) with U2S3-Structure

Abstract

New modifications of the rare-earth sesquisulfides Ln2S3 (Ln = Lu-Ho, Y) were found after high pressure, high temperature treatment and quenching to ambient conditions. The crystal structure of the prototype Tm2S3-III was determined from singlecrystal data. Tm2S3-III and the other members of the isotypic series Ln2S3-III are isostructural with U2S3. Some relations between the U2S3 structure and other structures with trigonal prismatic anion configurations are discussed.