Method for the preparation of amorphous metal fluorides

摘要

The present invention is related to a method for preparing an amorphous metal fluoride of the formula M<X+>FX- delta comprising the steps of a) providing a precursor, whereby the precursor comprises a structure having a formula of M<x+>F(x- delta )-yBy; and b) reacting the precursor with a fluorinating agent generating the amorphous metal flouride having a formula of M<x+>Fx- delta , whereby M is selected from the group comprising metals of the second, third and fourth main group and any subgroup of the periodic table, B is a coordinately bound group; x is any integer of 2 or 3; y is any integer between 1 and 3; delta is 0 to 0.1; and x- delta > y. <IMAGE>