Reaction of Triangular Cluster Complex Triiron Enneacarbonyl Disulfide with 1,2-bis(diphenylphosphino)ethane

Reaction of Fe3(μ3-S)2(CO)9 (A) with 1,2-bis(diphenylphosphino)ethane (Ph2PCH2CH2PPh2, dppe) in the presence of the decarbonylating agent Me3NO·2H2O in MeCN at room temperature afforded [Fe3(μ3-S)2(CO)8]2(Ph2PCH2CH2PPh2) (1) containing bridging diphosphine ligand in 50% yield. The title complex 1 was structurally characterized by IR and NMR spectroscopic analysis. In addition, the molecular structure of 1 was further determined by X-ray crystallography. The molecule is centrosymmetric and the phosphorus atoms of DPPE reside in a basal position of the square-pyramidal geometry of the iron atoms.