Patent ID: 6433203
Filing Date: 2002-08-13
Classification: C07C,C07F,C08F,Y10S

Abstract:
A metallocene compound of the formula (Ia): whereinR1, same or different from each other, are C1-C20-alkyl, C3-C20-cycloalkyl, C2-C20-alkenyl, C6-C20-aryl, C7-C20-alkylaryl or C7-C20-arylalkyl radicals, optionally containing silicon or germanium atoms, and optionally two adjacent R1 substituents can form a ring comprising from 5 to 8 carbon atoms; R2, same or different, are hydrogen atoms, C1-C20-alkyl, C3-C20-cycloalkyl, C2-C20-alkenyl, C6-C20-aryl, C7-C20-alkylaryl, or C7-C20-arylalkyl radicals, optionally containing silicon, germanium or halogen atoms; and optionally two adjacent R2 substituents can form a ring comprising from 5 to 8 carbon atoms; M is an atom of a transition metal selected from those belonging to group 3, 4, 5, 6 or to the lanthanide or actinide groups in the Periodic Table of the Elements; Mâ€² is an atom of a transition metal selected from those belonging to group 3 or to the lanthanide or actinide groups in the Periodic Table of the Elements; X, same or different, is a monoanionic ligand, such as a hydrogen atom, a halogen atom, an R4, OR4, OSO2CF3, OCOR4, SR4, NR42 or PR42 group, wherein the substituents R4 are a C1-C20-alkyl, C3-C20-cycloalkyl, C2-C20-alkenyl, C6-C20-aryl, C7-C20-alkylaryl or C7-C20-arylalkyl radical, optionally containing silicon or germanium atoms; and optionally the six-membered rings of the compounds of formula (Ia) and (Ib) are perhydrated; q is an integer from 3 to 5; n is an integer from 1 to 4, when the six-membered rings of the compound of formula (Ia) are not perhydrated, and is an integer of from 0 to 4, when the six-membered rings of the compound of formula (Ia) are perhydrated as well as in the compound of formula (Ib); p is an integer from 0 to 3, being equal to the oxidation state of the metal M minus two, S,S-[Ti(R,R-cyclacene)Cl2] being excluded.