Production of organic nickel compounds

Nickel compounds producible by reacting a nickel-(O)-compound or a nickel compound convertible thereto in situ with two different compounds corresponding to the following general formulae ##STR8## wherein R.sup.1, R.sup.2 and R.sup.3, which may be the same or different, represent optionally by halogen, hydroxy, C.sub.1 -C.sub.20 -alkoxy or C.sub.6 -C.sub.12 -aryloxy substituted C.sub.1 -C.sub.20 -alkyl radicals, C.sub.6 -C.sub.12 -aryl radicals or C.sub.3 -C.sub.8 -cycloalkyl radicals;

• C.sub.6 -C.sub.12 -aryl-C.sub.1 -C.sub.20 -alkyl radicals, C.sub.1 -C.sub.20 -alkyl-C.sub.6 -C.sub.12 -aryl radicals, C.sub.1 -C.sub.20 -alkyl-C.sub.3 -C.sub.8 -cycloalkyl radicals, C.sub.6 -C.sub.12 -aryl-C.sub.3 -C.sub.8 -cycloalkyl radicals C.sub.2 -C.sub.6 -alkenyl radicals, C.sub.6 -C.sub.12 -aryl-C.sub.2 -C.sub.6 -alkenyl radicals, di-C.sub.1 -C.sub.4 -alkylamino radicals and optionally substituted phenoxy and alkoxy radicals X denotes O, NR.sup.9 or ##STR9## R.sup.4, R.sup.5, R.sup.6, R.sup.7 and R.sup.8, which may be the same or different, represent optionally by halogen, hydroxy, C.sub.1 -C.sub.20 -alkoxy or C.sub.6 -C.sub.12 -aryloxy substituted C.sub.1 -C.sub.20 -alkyl radicals, C.sub.6 -C.sub.12 -aryl radicals, C.sub.2 -C.sub.30 -alkenyl radicals or C.sub.3 -C.sub.8 -cycloalkyl radicals;
• C.sub.6 -C.sub.12 -aryl-C.sub.1 -C.sub.20 -alkyl radicals, C.sub.1 -C.sub.20 -alkyl-C.sub.6 -C.sub.12 -aryl radicals halogen, hydroxy, C.sub.1 -C.sub.20 -alkoxy radicals, or C.sub.6 -C.sub.12 -aryloxy radicals, in addition to which
• R.sup.7 may represent hydrogen,
• R.sup.8 may represent hydrogen or sulphonate and
• R.sup.9, R.sup.10 and R.sup.11, which may be the same or different represent hydrogen, silyl, halogen, nitrophenyl, cyano or R.sup.1.