Molecular-Beam Studies of Organic Reactions

有机反应的分子束研究

• 批准号: 9204343
• 负责人: R. James Cross
• 金额: $ 19.71万
• 依托单位: Yale University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-06-01 至 1995-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9204343&HistoricalAwards=false
• 关键词: Molecular; Beam; Studies; Organic; Reactions

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.

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 大学）将研究化学电离的反应动力学 使用交叉分子束。这些包括刘易斯酸/碱， 布朗斯台德酸/碱、电子转移和SN2反应 涉及一般化学感兴趣的大分子。一种新型 该项目的特点是光子的催化吸收 过渡态物种。 %%% 教授克罗斯和桑德斯（耶鲁大学）将使用分子 光束和紫外线辐射来测量速率， 阐明了一般的气相反应机理， 化学兴趣这些反应中的许多反应是众所周知的， 但在气体中通过完全不同的途径进行， 其中不存在溶剂。Reactive的性质 这些反应中的中间体很难 这一决定引起了很大争议。成功 利用光直接刺激活性中间体是一种 重要的进步，因为它消除了一个主要来源， 模棱两可