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Study on platinum(II) induced formation of dithiiranes

机译:铂(II)诱导二噻烷生成的研究

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The reaction of a series of stable a-chlorinated oligosulfanes 2 and 3 with [Pt(eta(2)-C2H4)(Ph3P)(2)] 1 have been investigated. Starting with the alpha-chlorodisulfanes 2a,b, the platinum dichloride complex 5 and the side-on bonded thioketone platinum complexes 6a,b were formed. Complex 1 was treated with corresponding trisulfanes 3a,b to give 5, 6a,b and the dithiolatocomplexes 7a,b. We assume that the {Pt-0(Ph3P)2}-complex fragment inserted along the S-S bond to form the unstable intermediate G, which decomposed to form the products described above. We could prove that the sterically crowded 1,2,4-trithiolane 8 was not involved in the reaction pathway by treatment of 1 with 8 under the same conditions; after 24 h, 8 was found to be unreacted. X-ray structure analyses were performed on complexes 6a, 7a and 7b.
机译:研究了一系列稳定的a-氯化低聚硫醚2和3与[Pt(eta(2)-C2H4)(Ph3P)(2)] 1的反应。从α-氯二硫醚2a,b开始,形成二氯化铂络合物5和侧键合的硫酮铂络合物6a,b。用相应的三硫醚3a,b处理配合物1,得到5、6a,b和二硫代巯基配合物7a,b。我们假设{Pt-0(Ph3P)2}复杂片段沿着S-S键插入以形成不稳定的中间体G,其分解形成上述产物。通过在相同条件下用1处理8,可以证明空间拥挤的1,2,4-三硫杂环戊烷8不参与反应路径; 24小时后,发现有8个未反应。对复合物6a,7a和7b进行X射线结构分析。

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