Redetermination of dicerium(III) tris-(sulfate) tetra-hydrate

Abstract

Ce2(SO4)3(H2O)4 was obtained hydro-thermally from an aqueous solution of cerium(III) oxide, trimethyl-amine and sulfuric acid. The precision of the structure determination has been significantly improved compared with the previous result [Dereigne (1972). Bull. Soc. Fr. Mineral. Cristallogr. 95, 269-280]. The coordination about the two Ce atoms is achieved by seven and six bridging O atoms from sulfate anions. Each S atom makes four S - O - Ce linkages through bridging O atoms. The coordination sphere of each Ce is completed by two water molecules, which act as terminal ligands. © International Union of Crystallography 2008.