| abstract |
Indenyl compound of formula (1)n nwherein:n M is a transition metal from the lanthanides or fromngroup 3, 4, 5 or 6 of the Periodic System of Elements, Q is an anionic ligand to M, k is the number of Q groups, R is a bridging group and Z and X are substituents, wherein R contains atnleast one sp2-hybridised carbon atom that is bonded tonthe indenyl group at the 2-position with the exclusionnof Ti(deshydronorbiphenacene) ndichloride. |