Patent ID: 8288449

Claim:
Latent photoactivatable precatalysts for metathesis polymerization, comprising: general formula: Ru(NHC) n (X 1 ) m (L) o p+ ((X 2 ) âˆ’ ) p wherein: NHC is an N-heterocyclic carbene, n=1 or 2; X 1 is a C1-C 18 mono or polyhalogenized carbolic acid or trifluoromethane sulfate; X 2 is a C1-C 18 mono or polyhalogenized carbolic acid, trifluoromethane sulfate, tetrafluoroborate, hexafluorophosphate, or hexafluoroantimonate; m=0, 1 or 2 and L=a C 4 -C 18 carbolic acid nitrile or a C 4 -C 18 carbolic acid di- or trinitrile; and o=6âˆ’nâˆ’m or 5âˆ’nâˆ’m and p=2âˆ’m.