Spectroscopy and Dynamics of Ions

在化学部实验物理化学计划的这个项目中，W.Carl Lineberger将研究分子离子的结构和动力学，分子离子包括与已知数量的溶剂分子分离和聚集的分子离子，重点是三碳碳氢化合物和过渡金属聚集体。将获得基本碳氢自由基的键强度，将研究过渡中间体的重排和过渡态，并将获得关于小金属团簇电子结构的定量信息。超快激光技术将被开发，以获得关于具有部分完成的溶剂层的离子中反应过程的实时动态信息。这项研究将利用两个超快激光在微溶剂中引发和探测化学反应。这些研究的目标之一是增加对驱动最简单的化学转变的过程的量化理解。通过研究既孤立又被溶剂物种包围的分子的化学转化，Lineberger将能够证明不同的溶剂对反应性以及这些反应进行的速度的影响。

In this project in the Experimental Physical Chemistry program of the Chemistry Division, W. Carl Lineberger will study the structure and dynamics of molecular ions, both isolated and aggregated with known numbers of solvent molecules, with emphasis on three-carbon hydrocarbons and transition metal aggregates. Bond strengths of fundamental hydrocarbon radicals will be obtained, rearrangements and transition states for transient intermediates will be investigated, and quantitative information on the electronic structure of small metal clusters will be obtained. Ultrafast laser technologies will be developed to obtain real-time dynamic information on reactive processes in ions with partially completed solvent shells. This research will utilize two ultrafast lasers to initiate and probe chemical reactions in a microsolvent. One goal of these studies is to increase the quantitative understanding of the processes driving the simplest chemical transformations. By studying the chemical transformations of molecules which are both isolated as well as surrounded by solvent species, Lineberger will be able to demonstrate the effect that different solvents have on reactivity as well as on the rates at which these reactions proceed.