Synthesis and Structure of Cluster Monomer Fe2(CO)6(μ-SCH2CH=CH2)(μ3-S)Fe(CO)2(η5-C5H5)

The reaction of complex Fe₂(CO)₆S₂ 1 with allylmagnesium chloride in tetrahydrofuran yields the compound Fe₂(CO)₆(μ-SCH₂CH=CH₂)(μ-SMgCI) 2a, whose treatment with CpFe(CO)₂X (X = l, Cl; Cp = η⁵-C₅H₅) leads to the title compound 3, the structure of which has been determined by X-ray diffraction analysis.