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.

中文翻译：

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含有膦配体的二铁甲苯-3,4-二硫醇配合物的合成、结构和电化学

在本文中，合成并表征了四种具有膦配体的二铁甲苯-3,4-二硫醇配合物。[Fe2(CO)6{μ-SC6H3(CH3)S}] (1) 用相应的膦配体乙基二苯基次膦酸盐、4-（二甲氨基）苯基二苯基膦、2-（二苯基膦基）联苯或乙烯基二苯基膦在Me3NO·2H2O作为CO氧化剂得到产物[Fe2(CO)5(L){μ-SC6H3(CH3)S}] (L = Ph2POCH2CH3, 2; Ph2P(4-C6H4NMe2), 3; Ph2P(2 -C6H4Ph), 4; Ph2PCH = CH2, 5) 的产率为 68-88%。通过元素分析、红外光谱、核磁共振光谱以及 X 射线衍射分析对配合物 2-5 进行了表征。此外，通过循环伏安法研究了这些配合物的电化学。