Abstract
In this paper, four diiron toluene-3,4-dithiolate complexes with phosphine ligands were synthesized and characterized. Treatment of complex [Fe2(CO)6{μ-SC6H3(CH3)S}] (1) with the corresponding phosphine ligands ethyl diphenylphosphinite, 4-(dimethylamino)phenyldiphenylphosphine, 2-(diphenylphosphino)biphenyl, or vinyldiphenylphosphine in the presence of Me3NO·2H2O as the CO-oxidative agent afforded the products [Fe2(CO)5(L){μ-SC6H3(CH3)S}] (L = Ph2POCH2CH3, 2; Ph2P(4-C6H4NMe2), 3; Ph2P(2-C6H4Ph), 4; Ph2PCH = CH2, 5) in 68–88% yields. The complexes 2–5 were characterized by elemental analysis, IR, NMR spectroscopy, as well as by X-ray diffraction analysis. Furthermore, the electrochemistry of these complexes was studied by cyclic voltammetry.
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