New Organic Intermediates Containing Silicon or Tin

在这个有机动力学项目中， 约瑟夫B。兰伯特来自化学系， 西北大学将研究“新型有机中间体 含硅或锡”。 他将探索 在元件和相邻的正电荷之间， 研究超共轭现象。 将努力 使用硅鎓离子提供新的方法， 碳-硅和硅-硅键的形成， 作为聚合反应的催化剂， 材料. 含硅、锡或其他物质的带正电荷物质 主群元素将用于研究超共轭。 锡和铅将被用来研究离域阳性 为了证明一种新的机制， 称为多阶段超共轭。空间依赖性 在乙烯基和饱和体系中的超共轭将是 研究了 将制定新的战略， 硅鎓、锗鎓和磷鎓离子， 离子性和稳定性。 硅离子将用于 为碳-硅和硅-硅键合提供了新的方法， 形成和用作聚合催化剂 这些反应可能会产生新的材料。 的特殊 锡稳定正电荷的能力将被用来 产生新的苯基和乙烯基阳离子。

In this project in the Organic Dynamics Program, Professor Joseph B. Lambert from the Chemistry Department at Northwestern University will study "New Organic Intermediates Containing Silicon or Tin". He will explore the interactions between the element and adjacent positive charge in order to study the phenomenon of hyperconjugation. Efforts will be made to use silylenium ions to provide new methods for carbon-silicon and silicon-silicon bond formation and to serve as catalysts for polymerization reactions that may lead to new materials. Positively charged species containing silicon, tin, or other Main Group elements will be used to study hyperconjugation. Tin and lead will be used to study delocalization of positive charge over many sigma bonds in order to prove a new mechanism called multiple stage hyperconjugation. The spatial dependence of hyperconjugation in vinyl and saturated systems will be studied. New strategies will be devised for obtaining silylenium, germylenium, and phosphenium ions with greater ionicity and stability. Silylenium ions will be used to provide new methods for carbon-silicon and silicon-silicon bond formation and to serve as catalysts for polymerization reactions that may lead to new materials. The exceptional ability of tin to stabilize positive charge will be used to create new phenyl and vinyl cations.