Syntheses, Properties, and Reactivities of Unsaturated Ring Compounds Consisting of Silicon and Germanium

我们已经研究了重型组14元素的不饱和小环复合体的反应性，如硅和德国。在这个项目中获得了以下结果（1）环孢菌素的反应：环孢菌素离子的合成和结构与[Et_3Si（C_6H_6）]^+·TPFB ^-在苯氮盖环孢菌素·TPFPB ^-（TPFPB-=（C_6F_5）_4B^-）作为空气和湿度敏感的黄色晶体。X射线晶体学揭示的环孢杆菌离子不仅仅是一种没有与反虫和溶剂分子相互作用的自由计数，而是一种2π-电子同源化合物的稳定性（2）环孢杆菌离子的反应性：Cyclotetrasilenyl Radical and Cyclotetrasilenylide离子的合成和结构The reaction of the Cyclotetrasilenylium ion^-使用Bulky Trialkylsilsil Sodium有能力的环氯环乙烷基础作为一个稳定的水晶化合物通过一个电子减少 ... More ion。《crystallographic analysis》揭示了环球环素自由基是一种自由的硅基，它有一种异化的结构，没有任何间分子互动。环孢菌素离子的两个电子减少也被Li、Na和KC_8在二乙基醚中产生了给环孢菌素离子。Stepwise化学氧化物的化学氧化物成功地再生了cyclotetrasilenyl自由基和Cyclotetrasilenylium离子，指示cyclotetrasilenyl cation， radical和anion显示化学上可逆转的两个电子redox系统（3）德国和TinDisilagermirene衍生物与Si=Si或Si=Ge双键反应与dichlorogermylene-1的双重物种的反应，四氧化物复合物可以给苯甲酸甲酯，它有一种内环Ge=Ge双键。相同类型的环形扩展在与二氯丁胺-1，4二氧烷复合物的反应中的位置与分散剂混合物配对，四个成员环复合物轴承Ge=Sn双键少

We have studied the reactivity of unsaturated small ring compound consisting of heavier Group 14 Elements such as silicon and germanium. The following results have been obtained in this project(1)The Reaction of Cyclotrisilene : Synthesis and Structure of Cyclotetrasilenylium IonThe reaction of ^tBu_2MeSi-substituted cyclotrisilene with [Et_3Si(C_6H_6)]^+・TPFPB^-in benzene gave cyclotetrasilenylium・TPFPB^-(TPFPB-=(C_6F_5)_4B^-) as air-and moisture-sensitive yellow crystals. X-ray crystallography revealed that the cyclotetrasilenylium ion is not only a free cation without the Interaction with counter anion and solvent molecules, but a 2π-electron homoaromatic compound consisting of silicon(2)Reactivities of Cyclotetrasilenylium Ion : Synthesis and Structure of Cyclotetrasilenyl Radical and Cyclotetrasilenylide IonThe reaction of the Cyclotetrasilenylium ion^-with bulky trialkylsilylsodium afforded cyclotetrasilenyl radical as a stable crystalline compound through the one electron reduct … More ion. The crystallographic analysis reveals that the cyclotetrasilenyl radical is a free silyl radical, having an allyl type delocalized structure, without any intermolecular interaction. Two electron reduction of the Cyclotetrasilenylium ion was also achieved by Li, Na, and KC_8 in diethyl ether to give cyclotetrasilenide ion. Stepwise chemical oxidation of cyclotetraslienid successfully regenerates the cyclotetrasilenyl radical and the Cyclotetrasilenylium Ion, indicating that cyclotetrasilenyl cation, radical, and anion show chemically reversible two electron redox system on the allyl type silicon π-electron system(3)The Reaction of Disilagermirene with Divalent Species of Germanium and TinDisilagermirene derivatives with Si=Si or Si=Ge double bond react with dichlorogermylene-1,4 dioxane complex to give disiladigermetene, which have an endocyclic Ge=Ge double bond. The same type ring expansion took place in the reaction of disilagermirenes with dichlorostannylene-1,4 dioxane complex to afford unsaturated four membered ring compound bearing Ge=Sn double bond Less