Synthesis and Characterization of Nickel Compounds with Tetradentate Thiolate–Thioether Ligands as Precursors for [NiFe]–Hydrogenase Models
作者:Katharina Weber、Ingeborg Heise、Thomas Weyhermüller、Wolfgang Lubitz
DOI:10.1002/ejic.201301223
日期:2014.1
Synthesis and X-ray structural analyses of three NiS4 compounds with aliphatic tetradentate thiolato/thioether ligands―[Ni(xch)], [Ni(pdtch)], and [Ni(pdtdm)], in which H2xch, H2pdtch, and H2pdtdm are α,α′-bis(trans-2-mercapto-1-thiacyclohexyl)-o-xylene, 1,3-bis(trans-2-mercapto-1-thiacyclohexyl)propane, and 1,9-dimercapto-3,7-dithia-2,2,8,8-tetramethylnonane―are reported and further investigated by
具有脂肪族四齿硫醇基/硫醚配体的三种 NiS4 化合物的合成和 X 射线结构分析 - [Ni(xch)]、[Ni(pdtch)] 和 [Ni(pdtdm)],其中 H2xch、H2pdtch 和 H2pdtdm α,α'-双(trans-2-mercapto-1-thiacyclohexyl)-o-二甲苯、1,3-双(trans-2-mercapto-1-thiacyclohexyl)丙烷和1,9-dimercapto-3,7 -dithia-2,2,8,8-四甲基壬烷——被报道并通过核磁共振光谱、电子吸收光谱和循环伏安法进一步研究。描述了这些镍配合物的分子和电子结构。所有配合物都是方形平面,仅显示小的四面体畸变,与低自旋镍 (II) 中心 (S = 0) 一致。循环伏安法数据表明,对于所有化合物,单电子氧化和还原都是不可逆的,这可以通过 DFT 计算来解释。