METHOD FOR THE PRODUCTION OF WATER-FREE RARE EARTH METAL HALOGENIDES, SYNTHESIS MIXTURES CONTAINING WATER-FREE RARE EARTH METAL HALOGENIDES AND USE THEREOF

摘要

The invention relates to a method wherein rare earth metal oxides are reactedwith halogenation agents of general formula (1), wherein M= Si, Ge, Sn, Ti,Zr, Hf; Hal= CI, Br, I; X1,X2,X3 = independently from each other CI, Br, I, H,alkoxy (-OR), wherein R represents an organo radical having 1-20 atoms, alkylhaving 1-20 C atoms or aryl with 6-20 C atoms, wherein the alkyl or arlyradicals can include one or several halogen substituents selected from thegroup of F, CI, Br or I; in an aprotic polar solvent. The invention alsorelates to synthesis mixtures containing water-free rare earth metalhalogenides and the use thereof