METHOD FOR THE PRODUCTION OF ANHYDROUS ANHYDROUS RAR-EARTH METAL HALDES, SYNTHESIS MIXTURES CONTAINING ANHYDROUS RARE-EARTH METAL HALIDES AND USE THEREOF

摘要

The invention relates to a method wherein rare earth metal oxides are reacted with 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, alkyl having 1-20 C atoms or aryl with 6-20 C atoms, wherein the alkyl or arly radicals can include one or several halogen substituents selected from the group of F, CI, Br or I; in an aprotic polar solvent. The invention also relates to synthesis mixtures containing water-free rare earth metal halogenides and the use thereof.