Gas Phase Ion Chemistry and Thermochemistry

在化学系物理化学项目中，科罗拉多大学化学系的V.Bierbaum博士将继续并扩展她正在进行的关于气相离子-分子反应的动力学、机理和热化学的研究。有关同位素标记离子、微溶剂化离子的SN2反应以及平动能对反应动力学和机理的影响等方面的工作将会得到进一步的扩展。更新的工作将涉及更高的溶剂化程度、动能依赖性、硫与氧、亲核试剂和氮底物行为的比较。还将探索标记的微溶剂离子的其他机制，包括质子转移、消除、加成和缔合分离。这一研究对气相反应化学具有内在的意义。它的结果不仅在燃烧方面很重要，而且在高层大气的化学方面也很重要。

In this project in the Physical Chemistry program of the Chemistry Division, Dr. V. Bierbaum of the Chemistry Department of the University of Colorado will continue and extend her ongoing investigations on the kinetics, mechanisms, and thermochemistry of gas phase ion-molecule reactions. The work on isotopically labeled ions, SN2 reactions of microsolvated ions, and the effect of translational energy on the kinetics and mechanisms will be extended. Newer work will involve studies of higher degrees of solvation, kinetic energy dependence, comparison of the behavior of sulfur vs. oxygen nucleophiles and nitrogen substrates. Other mechanisms of labeled, microsolvated ions, including proton transfer, elimination, addition, and associative detachments will be explored. This research is of intrinsic interest to gas phase reaction chemistry. Its results are of importance not only in combustion, but also in the chemistry of the upper atmosphere.