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Transition metal thiolate complexes are metal complexes containing thiolate ligands. Thiolate is classified as a soft ligand, and metal thiolates are more common with soft metals. Most complexes contain other ligands in addition to thiolate, but many homoleptic complexes are known with only thiolate ligands. The amino acid cysteine has a thiol functional group, consequently many cofactors in proteins and enzymes feature cysteinate-metal cofactors. ==Synthesis== Metal thiolate complexes are commonly prepared by reactions of metal complexes with appropriate organosulfur compounds, thiols (RSH), thiolates (RS−), and disulfides (R2S2). The salt metathesis reaction route is most common. In this method, an alkali metal thiolate is treated with a transition metal halide to produce an alkali metal halide and the metal thiolate complex: :LiSC6H5 + CuI → Cu(SC6H5) + LiI The thiol ligand can also effect protonolysis of anionic ligands, as illustrated by the formation of an organonickel thiolate from nickelocene and ethanethiol: :2 HSC2H5 + 2 Ni(C5H5)2 → ()2 + 2 C5H6 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「transition metal thiolate complex」の詳細全文を読む スポンサード リンク
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