title: Electrocatalytic hydrogen generation by a trithiolato-bridged dimanganese hexacarbonyl anion with a turnover frequency exceeding 40,000 s(-1).
abstract: An unusual ionic manganese model complex [Mn(bpy)3](+)[(CO)3Mn(μ-SPh)3Mn(CO)3](-)(bpy: 2,2'-bipyridine) has been synthesized, which bears some structural resemblance to the active site of [FeFe] hydrogenase. An overpotential of 0.61 V has been determined for the electrocatalytic proton reduction using this complex in CH3CN with CF3COOH as the proton source. A turnover frequency of 44,600 s(-1) is achieved at high scan rates and in the presence of a large amount of acid.
authors.affiliation: Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore. chmfanwy@nus.edu.sg.
authors.forename: Kaipeng
authors.initials: K
authors.lastname: Hou
authors.forename: Hwa Tiong
authors.initials: HT
authors.lastname: Poh
authors.forename: Wai Yip
authors.initials: WY
authors.lastname: Fan
mesh_terms: D015082:2,2'-Dipyridyl / Q000737:chemistry; D000143:Acids / Q000737:chemistry; D000838:Anions / Q000737:chemistry*; D002384:Catalysis; D020134:Catalytic Domain; D018360:Crystallography, X-Ray; D004563:Electrochemistry; D006859:Hydrogen / Q000378:metabolism*; D006864:Hydrogenase / Q000378:metabolism; D007506:Iron-Sulfur Proteins / Q000378:metabolism; D017895:Manganese Compounds / Q000737:chemistry*; D008958:Models, Molecular; D009942:Organometallic Compounds / Q000737:chemistry*; D010084:Oxidation-Reduction; D011522:Protons; D013438:Sulfhydryl Compounds / Q000737:chemistry*
chemical_list: D000143:Acids; D000838:Anions; D007506:Iron-Sulfur Proteins; D017895:Manganese Compounds; D009942:Organometallic Compounds; D011522:Protons; D013438:Sulfhydryl Compounds; D015082:2,2'-Dipyridyl; D006859:Hydrogen; D006864:Hydrogenase