NEUTRAL PRODUCTS FROM IONIC REACTIONS IN THE GAS PHASE

气相离子反应的中性产物

• 批准号: 9983610
• 负责人: Thomas Morton
• 金额: $ 34.39万
• 依托单位: University of California-Riverside
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-03-01 至 2004-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9983610&HistoricalAwards=false
• 关键词: NEUTRAL; PRODUCTS; IONIC; REACTIONS; GAS

University of California at Riverside. He uses three experimental techniques to study organic reactions in the gas phase: collection of the neutral reaction products from a specially designed Electron Bombardment Flow reactor which produces gaseous ions, transmutation of C-bonded tritium to give carbonium ions and 3He, and mass spectroscopy. Five types of experiments illustrate the scope of the chemistry: cyclization of omega-alkenyl cations, rearrangements of hydroxylated carbocations, reduction of gaseous carbonyl compounds promoted by trimethylsilyl cations, production of alkyl cations via the deposition of T+ onto ether oxygens, and changes in the neutral tritiated products on going from a high pressure gas to a supercritical fluid. Dr. Morton's work uses a unique Electron Bombardment Flow reactor in which an electron beam is passed down the center of a low pressure reaction vessel enclosed in a solenoid electromagnet. With it, he is able to trap and analyze the neutral (uncharged) molecular products of gas phase reactions, as well as the charged particles produced by electron collisions. Charged particles can also be produced by beta-decay of tritiated molecules. With these methods, Dr. Morton is able to study the details of some important types of organic reactions, and to develop new instrumental approaches for analyzing the structures of neutrals from labeled reactants and their isotopic distributions.

加州大学河滨分校。他使用了三种实验技术来研究气相中的有机反应：从一个特别设计的电子轰击流反应器中收集中性反应产物，产生气态离子，c键氚嬗变为碳离子和3He，以及质谱。五种类型的实验说明了化学的范围：ω -烯基阳离子的环化，羟基化碳阳离子的重排，三甲基硅基阳离子促进的气态羰基化合物的还原，通过T+沉积在醚氧上产生烷基阳离子，以及中性氚化产物从高压气体到超临界流体的变化。莫顿博士的工作使用了一种独特的电子束轰击流反应器，其中电子束通过封闭在螺线管电磁铁中的低压反应容器的中心。有了它，他能够捕获和分析气相反应的中性（不带电）分子产物，以及由电子碰撞产生的带电粒子。氚化分子的衰变也能产生带电粒子。通过这些方法，莫顿博士能够研究一些重要类型的有机反应的细节，并开发新的仪器方法来分析标记反应物的中性结构及其同位素分布。