PROCESS FOR THE PRODUCTION OF MONOHALIDE OR DIHALIDE METALLOCENE COMPOUNDS

摘要

A process for preparing dihalide or monohalide metallocene compounds comprising contacting a compound of formula (II) (Cp)(ZR<1>m)n(A)rML'y (II) wherein Cp is a cyclopentadienyl radical; (ZR<1>m)n is a divalent bridging group between Cp and A; A is a cyclopentadienyl radical or O, S, NR<2>, PR<2> wherein R<2> is an hydrocarbon radical, M is zirconium, titanium or hafnium, L' is an hydrocarbon radical, r ranges from 0 to 2 and y is equal to 4; with an halogenating agent selected from the group consisting of: T<1>Lw<1> wherein T<1> is a metal of groups 3-13 of the periodic table; L is halogen and w<1> is equal to the oxidation state of the metal T<1>; T<2>Lw<2> wherein T<2> is a nonmetal element of groups 13-16 of the periodic table (new IUPAC version); and w<2> is equal to the oxidation state of the element T<2>; O=T<3>Lw<3> where T<3> is a selected from the group consisting of C, P and S; O is an oxygen atom bonded to T<3> trough a double bond; and w<3> is equal to the oxidation state of the element T<3> minus 2; R<6>C(O)L, wherein R<6> is an hydrocarbon radical; L2 and HL.