| abstract |
Bridged cyclopentadienyl derivatives having general formula (I)A-X-B(I)wherein: 1) A is a monofunctional hydrocarbyl radical having general formula (II) 2) -X- is the bridge between A and B and consists of a bifunctional radical selected from an alkylene group, a silanylene group, an alkyl substituted silaalkylene group, a siloxasilanylene group; 3) B is a monofunctional hydrocarbyl radical selected from: e) any of the A radicals defined above, f) a cyclopentadienyl radical. |