| 摘要 |
A metallocene compound of formula (I): wherein M is zirconium, titanium and hafnium; X is a hydrogen atom, a halogen atom or a hydrocarbon radical; R<1 >is a linear C1-C20-alkyl radical; R<2 >is a hydrogen atom or hydrocarbon R<3>, R<4>, R<5>, R<6>, R<7>, and R<8>, are hydrogen atoms or hydrocarbon radicals, A is a sulphur (S) atom or an oxygen (O) atom; Q is a radical of formula (II), (III) or (IV) being bonded to the indenyl at the position indicated by the symbol *; (II), (III), (IV) wherein T<1 >is a sulphur atom, an oxygen (O) atom or a NR; R<9>, R<10 >and R<11 >are hydrogen atoms or hydrocarbon radicals; T<2>, T<3>, T<4>, T<5>, and T<6 >are carbon atoms (C) or nitrogen atoms (N); m<1>, m<2>, m<3>, m<4 >and m<5 >are 0 or 1; R<12>, R<13>, R<14>, R<15 >and R<16 >are hydrogen atoms or hydrocarbon radicals with the provisos that at least one of R<12>, R<13>, R<14>, R<15 >and R<16 >is different from hydrogen atoms, two of T<2>, T<3>, T<4>, T<5 >and T<6 >are nitrogen atoms.
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