Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg, Hans-Meerwein-Straße 4, D-35043 Marburg, Germany.
Dalton Trans. 2019 Mar 12;48(11):3671-3675. doi: 10.1039/c9dt00310j.
Reactions of R1GeCl3 (R1 = CMe2CH2COMe) with (Me3Si)2E (E = S, Se, Te) yield three new organogermanium chalcogenide complexes [(R1GeCl)2S2] (1), [(R1GeCl)2Se2] (2), and [(R1GeCl)2Te2] (3) with functionalized ligands R1 = CMe2CH2COMe. NMR titration experiments clearly demonstrate that these dimeric complexes are intermediates in the formation of the well-known sesquichalcogenide clusters [(R1Ge)4E6]. In striking contrast to related tin compounds that were recently reported, the mono-bridged complexes of the type "[(R1GeCl2)2E]" and defect-heterocubane-type clusters "[(R1Ge)3E4Cl]" do not form on the NMR time scale for E = S or Te, and only in traces for E = Se.
化合物 R1GeCl3（R1 = CMe2CH2COMe）与(Me3Si)2E（E = S、Se、Te）的反应生成了三种具有功能化配体 R1 = CMe2CH2COMe 的新型有机锗硫属化物配合物[(R1GeCl)2S2]（1）、[(R1GeCl)2Se2]（2）和[(R1GeCl)2Te2]（3）。NMR 滴定实验清楚地表明，这些二聚体配合物是形成众所周知的 sesquichalcogenide 簇[(R1Ge)4E6]的中间体。与最近报道的相关锡化合物形成鲜明对比的是，对于 E = S 或 Te，在 NMR 时间尺度上不会形成类型为“[(R1GeCl2)2E]”的单桥联配合物和缺陷杂立方烷型簇“[(R1Ge)3E4Cl]”，而对于 E = Se，仅以痕量形式存在。
