Molecular-Beam Studies of Organic Reactions

在这个实验物理化学项目中，由化学系，教授。克罗斯和桑德斯(耶鲁大学)将使用交叉分子束研究化学电离的反应动力学。这些反应包括Lewis酸/碱、Bronsted酸/碱、电子转移和涉及一般化学兴趣的大分子的SN2反应。该项目的一个新特点是过渡态物种对光子的催化吸收。%教授。克罗斯和桑德斯(耶鲁大学)将使用分子束和紫外线辐射来测量速率，并阐明人们普遍感兴趣的气相反应的机理。其中许多反应在溶液中是众所周知的，但在没有溶剂的气体中以完全不同的路径进行。这些反应中的活性中间体的性质一直很难确定，并产生了许多争议。成功地利用光直接刺激活性中间体是一项重要的进步，因为它消除了一个主要的模糊性来源。

In this Experimental Physical Chemistry project, sponsored by the Chemistry Division, Profs. Cross and Saunders (Yale University) will study reaction dynamics of chemiionization using crossed molecular beams. These include Lewis acid/base, Bronsted acid/base, electron transfer, and SN2 reactions involving large molecules of general chemical interest. A novel feature of the project is the catalytic absorption of photons by transition state species. %%% Profs. Cross and Saunders (Yale University) will use molecular beams and ultraviolet radiation to measure the rates and elucidate the mechanisms of gas phase reactions of general chemical interest. Many of these reactions are well known in solution but proceed by quite different pathways in the gas, where no solvent is present. The nature of reactive intermediates in these reactions has been difficult to determine and has generated much controversy. The successful use of light to directly stimulate reactive intermediates is an important advance because it removes a major source of ambiguity.