Bidentate Phosphine Ligand Based Fe<sub>2</sub>S<sub>2</sub>-Containing Macromolecules: Synthesis, Characterization, and Catalytic Electrochemical Hydrogen Production
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The reaction of [Fe2(CO)6(μ-SCH2)2NCH2CH2N(μ-SCH2)2Fe2(CO)6] (1) with 1,2-bis(diphenylphosphino)ethane in the presence of Me3NO·2H2O affords two structurally different metallomacromolecules: a dimer of the type [{Fe2(CO)5(μ-SCH2)2NCH2CH2N(μ-SCH2)2Fe2(CO)5}(Ph2PCH2)2] (2) and a tetramer species containing eight iron centers with an overall formula of [{Fe2(CO)6(μ-SCH2)2NCH2CH2N(μ-SCH2)2Fe2(CO)5}2(Ph2PCH2)2] (3). Their structures have been determined by X-ray crystallography, showing one macrocyclic complex (2) and one linear complex (3). Electrochemical hydrogen evolution catalyzed by these two complexes with ca. 80−90 single-run turnovers is observed, indicating good potential as catalysts for future applications.
创建时间：
2016-02-29
