29-08-1996 дата публикации
Номер: DE19506557A1
The invention relates to metallocene complexes of the general formula (I), wherein: M is a metal from subgroups III, IV, V or VI of the periodic table of elements or a metal from the lanthanides; X is fluorine, chlorine, bromine, iodine, hydrogen, C1-C10 alkyl, C6-C15 aryl or -OR<5>, wherein R<5> is C1-C10 alkyl, C6-C15 aryl, alkyl aryl, aryl alkyl, alkyl fluoride or aryl fluoride with, respectively, 1 to 10 C atoms in the alkyl radical and 6 to 20 C atoms in the aryl radical; R<1> to R<4> and R<6> to R<9> are hydrogen, C1-C10 alkyl, 5- to 7-membered cycloalkyl, which in turn can carry C1-C10 alkyls as substituents, C6-C15 aryl or aryl alkyl, wherein two adjacent radicals may together stand for cyclic groups containing 4 to 15 C atoms, or Si(R<10>)3 with R<10> being C1-C10 alkyl, C6-C15 aryl or C3-C10 cycloalkyl; Y is nitrogen, phosphorous, arsenic, antimony or bismuth; R<11>, R<12> are hydrogen, C1-C10 alkyl, C3-C10 cycloalkyl or C6-C15 aryl; n is 0, 1 or 2; and Z<-> stands for halogenides, carboxylates, monosubstituted sulfonates, borates or alcoholates. The invention also relates to ligand systems of the general formula (II) as intermediates.
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