Diiron Propane-1,2-Dithiolate Complexes With Monosubstituted Tris(3-Chlorophenyl)Phosphine Or Tris(4-Trifluoromethylphenyl)Phosphine: Synthesis, Characterization, Crystal Structures, And Electrochemistry

Two diiron propane-1,2-dithiolate complexes with monosubstituted tris(3-chlorophenyl)phosphine or tris(4-trifluoromethylphenyl)phosphine were synthesized and characterized. Treatment of the parent complex [Fe-2(CO)(6){mu-SCH2CH(CH3)S}] (1) with tris(3-chlorophenyl)phosphine or tris(4-trifluoromethylphenyl)phosphine and Me3NO center dot 2H(2)O as the decarbonylating agent afforded complexes [Fe-2(CO)(5)P(3-C6H4Cl)(3){mu-SCH2CH(CH3)S}] (2) and [Fe-2(CO)(5)P(4-C6H4CF3)(3){mu-SCH2CH(CH3)S}] (3) in 82% and 77% yields, respectively. Complexes 2 and 3 have been characterized by elemental analysis, IR, NMR spectroscopy, and X-ray diffraction analysis. Additionally, the electrochemical properties have been studied by cyclic voltammetry.