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Abstract
Four diiron dithiolate complexes with monophosphine ligands have been prepared and structurally characterized. Reactions of (μ-SCH2CH2S-μ)Fe2(CO)6 or [μ-SCH(CH3)CH(CH3)S-μ]Fe2(CO)6 with tris(4-chlorophenyl)phosphine or diphenyl-2-pyridylphosphine in the presence of Me3NO·2H2O afforded diiron pentacarbonyl complexes with monophosphine ligands (μ-SCH2CH2S-μ)Fe2(CO)5[P(4-C6H4Cl)3] (1), (μ-SCH2CH2S-μ)Fe2(CO)5[Ph2P(2-C5H4N)] (2), [μ-SCH(CH3)CH(CH3)S-μ]Fe2(CO)5[P(4-C6H4Cl)3] (3), and [μ-SCH(CH3)CH(CH3)S-μ]Fe2(CO)5[Ph2P(2-C5H4N)] (4) in good yields. Complexes 1–4 were characterized by elemental analysis, 1H NMR, 31P{1H} NMR and 13C{1H} NMR spectroscopy. Furthermore, the molecular structures of 1–4 were confirmed by X-ray crystallography.
