An ethylene-bridged zirconocene complex, (Cp(2)ZrMe)2(CH2CH2), was pre
pared by the reaction of Cp(2)ZrMe(2) with a zirconocene-ethylene comp
lex, [Cp(2)ZrEt(CH2=CH2)]MgBr, and the structure of this complex was d
etermined by a single-crystal X-ray diffraction study. The structure o
f this complex showed one methyl group on each zirconium and an ethyle
ne ligand simultaneously coordinating to the two zirconocene moieties.