Patent ID: 7045644

Claim:
An imidochromium compound having the general formula II, wherein: R 2 is R 3 C═NR 4 , R 3 C═O, R 3 C═O(OR 4 ), R 3 C═S, (R 3 ) 2 P═O, (OR 3 ) 2 P═O, SO 2 R 3 , R 3 R 4 C═N, NR 3 R 4 or BR 3 R 4 ; X independent of each other, is fluorine, chlorine, bromine, iodine, NR 5 R 6 , NP(R 5 ) 3 , OR 5 , OSi(R 5 ) 3 , SO 3 R 5 , OC(O)R 5 , β-diketonate, sulfate, dicarboxylate, dialcoholate, BF 4 − , PF 6 − , or bulky weakly or non-coordinating anions; R 3 -R 6 independent of each other, are C 1 -C 20 -alkyl, C 2 -C 20 -alkenyl, C 6 -C 20 -aryl, alkylaryl having 1 to 10 carbon atoms in the alkyl radical and 6 to 20 carbon atoms in the aryl radical, hydrogen if the latter is bonded to a carbon atom, whereby the organic radicals R 3 and R 4 optionally have inert substituents; m is 1 for dianionic X, 2 for monoanionic X.