Biradical-Like Reactive Intermediates

有机动力学计划的这笔赠款支持 约瑟夫·米歇尔博士在科罗拉多大学的继续工作。 这项工作将提供新的见解的性质短命 在化学反应过程中形成的中间体 并将开发新的化学测量方法 使用“分子大小的构造集”。" Michl博士将进行的实验属于 分为两类。第一个是双自由基中间体， 其将通过光解或热解过程产生， 也不愿被困在低温惰性气体中 电子和振动光谱研究将提供一个 提高了对这些化合物的结构和反应性的理解， 不稳定的物种第二类是以Michl的 staffane碳氢化合物，这是棒状分子组成， 循环双环<$1.1.0！戊烷亚单位。这些“分子 Tinkertoys”为研究 电子效应通过分子框架的传输。 Michl教授还将利用 将这些分子连接在一起， 具有明确分子结构的超分子组装体。

This grant from the Organic Dynamics Program supports the continuing work of Dr. Josef Michl at the University of Colorado. This work will provide new insights into the nature of short-lived intermediates that are formed in the course of chemical reactions and will also develop new approaches to chemical measurements using a "molecular-size construction set." The experiments that will be carried out by Dr. Michl fall into two categories. The first is focused on biradical intermediates, which will be generated by photolytic or pyrolytic processes and than be trapped in a low-temperature, inert-gas matrix. Electronic and vibrational spectroscopic studies will afford an improved understanding of the structure and reactivity of these unstable species. The second category is centered on Michl's staffane hydrocarbons, which are rod-like molecules made up of recurring bicyclo ı1.1.0! pentane subunits. These "molecular Tinkertoys" provide a unique opportunity for studying the transmission of electronic effects through a molecular framework. Professor Michl will also take advantage of the linear shape of these molecules to link these molecules together and form supramolecular assemblies with well-defined molecular structures.