title: Bidentate phosphine ligand based Fe2S2-containing macromolecules: synthesis, characterization, and catalytic electrochemical hydrogen production.
abstract: The reaction of [Fe2(CO)6(mu-SCH2)2NCH2CH2N(mu-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(mu-SCH2)2NCH2CH2N(mu-SCH2)2Fe2(CO)5}(Ph2PCH2)2] (2) and a tetramer species containing eight iron centers with an overall formula of [{Fe2(CO)6(mu-SCH2)2NCH2CH2N(mu-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.
authors.affiliation: State Key Laboratory of Fine Chemicals, Dalian University of Technology, 116012 Dalian, People's Republic of China.
authors.forename: Weiming
authors.initials: W
authors.lastname: Gao
authors.forename: Jianhui
authors.initials: J
authors.lastname: Liu
authors.forename: Björn
authors.initials: B
authors.lastname: Akermark
authors.forename: Licheng
authors.initials: L
authors.lastname: Sun
mesh_terms: D002384:Catalysis; D004563:Electrochemistry; D006859:Hydrogen / Q000737:chemistry*; D008024:Ligands; D008958:Models, Molecular; D008968:Molecular Conformation; D009942:Organometallic Compounds / Q000737:chemistry*; D009943:Organophosphorus Compounds
chemical_list: D008024:Ligands; D009942:Organometallic Compounds; D009943:Organophosphorus Compounds; C049078:bis(diphenylphosphine)ethane; D006859:Hydrogen