Zaitsev Kirill V, Poleshchuk Oleg Kh, Churakov Andrei V
Department of Chemistry, M.V. Lomonosov Moscow State University, Leninskie Gory 1, 3, 119991 Moscow, Russia.
A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninskii Prospekt 29, 119991 Moscow, Russia.
Molecules. 2022 Mar 26;27(7):2147. doi: 10.3390/molecules27072147.
Derivatives of main group elements containing element-element bonds are characterized by unique properties due to σ-conjugation, which is an attractive subject for investigation. A novel series of digermanes, ArGe-Ge(SiMe), containing aryl (Ar = -CHMe (), -CHF (), CF ()) and trimethylsilyl substituents, was synthesized by the reaction of germyl potassium salt, [(MeSi)GeK*THF], with triarylchlorogermanes, ArGeCl. The optical and electronic properties of such substituted oligoorganogermanes were investigated spectroscopically by UV/vis absorption spectroscopy and theoretically by DFT calculations. The molecular structures of compounds and were studied by XRD analysis. Conjugation between all structural fragments (Ge-Ge, Ge-Si, Ge-Ar, where Ar is an electron-donating or withdrawing group) was found to affect the properties.
由于σ-共轭作用，含有元素-元素键的主族元素衍生物具有独特的性质，这是一个具有吸引力的研究课题。通过锗基钾盐[(MeSi)GeK·THF]与三芳基氯锗烷ArGeCl反应，合成了一系列新型的含有芳基（Ar = -CHMe()、-CHF()、CF()）和三甲基硅基取代基的二锗烷ArGe-Ge(SiMe)。通过紫外/可见吸收光谱对这类取代的低聚有机锗烷的光学和电子性质进行了光谱研究，并通过密度泛函理论计算进行了理论研究。通过X射线衍射分析研究了化合物和的分子结构。发现所有结构片段（Ge-Ge、Ge-Si、Ge-Ar，其中Ar为供电子或吸电子基团）之间的共轭作用会影响其性质。
