Synthesis and characterization of five diiron ethanedithiolate complexes with acetate group and phosphine ligands

Add time:09/03/2019    Source:sciencedirect.com

A series of acetate ester containing diiron ethanedithiolate complexes have been synthesized and structurally characterized. CO substitution of complex [Fe2(CO)6{μ-SCH2CH(CH2O2CCH3)S}] (1) with the phosphine ligands tris(2-furyl)phosphine, tris(2-thienyl)phosphine, tris(4-fluorophenyl)phosphine, tris(4-chlorophenyl)phosphine, or cyclohexyldiphenylphosphine in the presence of the decarbonylating agent Me3NO·2H2O gave the phosphine-substituted diiron derivatives [Fe2(CO)5(L){μ-SCH2CH(CH2O2CCH3)S}] (L = P(2-C4H3O)3, 2; P(2-C4H3S)3, 3; P(4-C6H4F)3, 4; P(4-C6H4Cl)3, 5; Ph2PC6H11, 6) in 86–95% yields. The complexes 2–6 have been characterized by elemental analysis, spectroscopy, and X-ray diffraction analysis. Additionally, the electrochemical properties were investigated by cyclic voltammetry.

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