Synthesis and characterization of diiron propanedithiolate complexes with monosubstituted tris(2-furyl)phosphine or n-propyldiphenylphosphine

Two monosubstituted diiron complexes, namely (µ-SCH₂CH₂CH₂S-µ)Fe₂(CO)₅L (L = P(2-C₄H₃O)₃, 2; Ph₂PCH₂CH₂CH₃, 3), have been prepared by the carbonyl substitution of the parent complex (µ-SCH₂CH₂CH₂S-µ)Fe₂(CO)₆ (1) with the corresponding monophosphine ligands in the presence of Me₃NO·2H₂O. The new complexes were characterized by elemental analysis, spectroscopy and single crystal X-ray diffraction analysis.