CRYSTAL STRUCTURE OF CS2KTBCL6 AND CS2KEUCL6 BY POWDER X-RAY DIFFRACTION

摘要

Cs2KTbCl6 and Cs2KEuCl6 from the elpasolite family (A(2)BLnX(6)) were obtained by slowly evaporating to dryness a hot aqueous HCl solution of the appropriate chlorides and characterized by powder X-ray diffraction. Using WYR3 program software it was found that the title compounds are cubic and isostructural to Rb2NaTmCl6. Cell parameters for Cs2KTbCl6 and Cs2KEuCl6 are a = 11.1224(3) Angstrom and a = 11.1633(3) Angstrom, respectively. The space group for both compounds is Fm3m. (C) 1997 Academic Press. [References: 11]