Preparation of (π-Cyclopetadienyl)[π-Tetrakis(Trimethylsilyl)Cyclobutadiene]Cobalt

A (π-cyclopentadienyl)cobalt complex of tetrakis(trimethylsilyl)cyclobutadiene has been prepared by the reaction of bis(trimethylsily)acetylene and the dinuclear cobalt complex, di-π-cyclopentadienyl-μ-bis(trimethylsilyl)acetylenedicobalt.