Titanocenes and a radiation-polymerizable composition containing these titanocenes

Claim 1

A titanocene of the formula I ##STR42## in which the two R 1 independently of one another are cyclopentadienyl.sup.⊖, indenyl.sup.⊖ or 4,5,6,7-tetrahydroindenyl.sup.⊖, or both R 1 together are an unsubstituted or substituted radical of the formula II ##STR43## in which X is --(CH 2 ) n with n=1, 2 or 3 alkylidene having 2 to 12 C atoms, cycloalkylidene having 5 to 7 ring carbon atoms, SiR 2 4 or SnR 2 4 , and R 4 is C 1 -C 12 -alkyl, C 5 -C 12 -cycloalkyl, C 6 -C 16 -aryl or C 7 -C 16 -aralkyl, or R 1 is said cyclopentadienyl, indenyl, 4,5,6,7-tetrahydroindenyl or radical of formula II which is substituted by alkyl, by alkoxy or by alkenyl of up to 18 carbon atoms, by cycloalkyl or by cycloalkenyl of 5 to 8 ring carbon atoms; by aryl of 6 to 16 carbon atoms; by aralkyl of 7 L to 16 carbon atoms; by halogen; by amino or by aminoalkyl of up to 12 carbon atoms wherein the amino groups are unsubstituted or substituted by alkyl of up to 12 carbon atoms or quaternized with an alkyl halide of up to 12 carbon atoms, R 2 is a 6-membered carboxyclic or 5-membered or 6-membered heterocyclic aromatic ring which is substituted in at least one of the two ortho-positions relative to the metal-carbon bond by --CF 2 Z, in which Z is F or unsubstituted or substituted alkyl, or wherein said aromatic ring of R 2 is further substituted by alkyl or by alkoxy of 1 to 18 carbon atoms; by cycloalkyl of 5 to 6 ring carbon atoms; by aryl of 6 to 16 carbon atoms; by aralkyl of 7 to 16 carbon atoms; by hydroxyl; by carboxyl; by halogen; by cyano; by amino which is unsubstituted or substituted by alkyl or quaternized by an alkyl halide; by pyrrolidino, by piperidino, by piperazino, by morpholino or by N-methylpiperazino; by alkoxycarbonyl of 1 to 18 carbon atoms, in the alkoxy moiety; by aminocarbonyl containing one or two C 1 -C 12 alkyl groups in the amonio moiety; or by aminocarbonyl containing a pyrrolidino, piperidino, piperazino, N-methylpiperazino or morpholino group; or by aminoalkyl of up to 6 carbon atoms wherein the amino group is unsubstituted or substituted by alkyl of up to 12 carbon atoms or quaternized with an alkyl halide of up to 12 carbon atoms and R 3 is as defined for R 2 or is halogen, cyanate, thiocyanate, azide, cyano, --OH, alkoxy, alkylthio, aryloxy, arylthio, acyloxy, a group of the formula R 10 R 11 N-- in which R 10 and R 11 are C 1 -C 12 alkyl, unsubstituted or alkyl substituted cyclopentyl, cyclohexyl, phenyl or benzyl, or R 10 and R 11 together are tetra-, penta- or hexamethylene which are unsubstituted or alkyl substituted or are interruped by --S--, --O-- or ##STR44## alkynyl, phenylalkynyl, a group of the formula ##STR45## in which R 12 to R 15 are hydrogen, fluorine, chlorine, bromine, C 1 -C 4 alkyl, dialkylamino having 2 to 12 carbon atoms, trialkylaminomethyl having 3 to 18 carbon atoms or said amino groups being quaternized with C 1 -C 6 alkyl halides, SiR 3 or S n R 3 R 4 being as defined above.