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Reaction of Alkenylzirconocenes with Dialkylzirconocenes: Unexpected Formation of Bimetallic (μ-Alkynyl)zirconocene Complexes
journal contribution
posted on 1997-05-13, 00:00 authored by Tamotsu Takahashi, Yasushi Nishihara, Wen-Hua Sun, Reinald Fischer, Kiyohiko NakajimaReaction of alkenylzirconocenes
Cp2ZrX(MeCCH2) (X = Cl, Br) with dialkylzirconocenes
Cp2ZrR2 (R = Me, Et, Bu) yielded the unexpected
bimetallic
zirconocene complexes
Cp2Zr(μ-X)(μ-C⋮CCH3)ZrCp2
(X
= Cl, Br). Its structure (X = Cl) was determined
by
X-ray crystallography. The monitoring of the reaction
of Cp2ZrBu2 with
Cp2ZrBr(MeCCH2) revealed that
the
first step of this reaction was an exchange reaction of
the Bu and Br groups.