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首页> 外文期刊>Polyhedron: The International Journal for Inorganic and Organometallic Chemistry >Using naphthalene-2-thiolate ligands in the design of hydrogenase models with mild proton reduction overpotentials
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Using naphthalene-2-thiolate ligands in the design of hydrogenase models with mild proton reduction overpotentials

机译:在轻度质子还原超电势的氢化酶模型设计中使用萘-2-硫醇盐配体

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摘要

Diiron-carbonyl complexes coupled to naphthalene-2-thiolate ligands, [(μ-naphthalene-2-thiolato)_2Fe_2(CO)_6] (1) and [(μ-naphthalene-2-thiolato)_2Fe_2(CO) _5PPh_3] (2), have been usefully prepared and structurally characterized. As models for the active site of hydrogenase enzymes, these compounds have been examined as electrocatalysts for the reduction of proton to produce molecular hydrogen. In the presence of acetic acid, 1 and 2 catalyze the electrochemical production of molecular hydrogen with mild overpotentials of -0.54 and -0.51 V versus Fc/Fc~+, respectively. The overpotential for compound 1 is 260 mV smaller than that of the analogous compound, [(μ-SPh)_2Fe_2(CO)_6].
机译:与萘-2-硫醇盐配体[[μ-萘-2-硫醇基] _2Fe_2(CO)_6](1)和[[μ-萘-2-硫醇基] _2Fe_2(CO)_5PPh_3]偶联的二铁-羰基配合物2)已经被有用地制备并且在结构上被表征。作为氢化酶活性位点的模型,已检查了这些化合物作为还原质子产生分子氢的电催化剂。在乙酸的存在下,1和2催化分子氢的电化学生成,相对于Fc / Fc〜+,它们的温和超电势分别为-0.54和-0.51V。化合物1的过电势比类似化合物[(μ-SPh)_2Fe_2(CO)_6]小260 mV。

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