Thermochemistry of Transition Metal Ligand Bonds

在化学系物理化学计划的这个项目中，犹他大学的Peter Armentrout将使用流动余辉离子产生和引导离子束质谱仪系统地测定气相反应性和热化学，特别是过渡金属原子和有机金属离子。利用电子状态层析技术，Armentrout还将状态选择过渡金属离子并研究它们的动态行为。在热能和超热能下都将获得详细的动力学和热力学数据。本课程将考察各种中性试剂与离子的反应。通过研究含有过渡金属原子的带电分子的反应，Armentrout可以确定相应中性物种的许多性质，如不同分子的稳定性或这些原子与连接的单元(称为配体)之间的键强度。这些信息有助于理解许多涉及过渡金属的过程，例如催化。这项工作的其他阶段的结果也影响到大气化学和表面化学。

In this project in the Physical Chemistry Program of the Chemistry Division, Peter Armentrout of the University of Utah will use flowing afterglow ion production and guided ion beam mass spectrometry in a systematic determination of gas phase reactivity and thermochemistry, especially of transition metal atomic and organometallic ions. Employing the technique of electronic state chromatography, Armentrout will also state select transition metal ions and study their dynamic behavior. Detailed kinetic and thermodynamic data will be obtained at both thermal and hyperthermal energies. Reactions of ions with a wide range of neutral reagents will be examined. %%% By studying reactions involving electrically charged molecules containing transition metal atoms, Armentrout can determine many properties of the corresponding neutral species, such as the stability of different molecules or the strength of bonds between these atoms and attached units called ligands. Such information is useful for understanding many processes, such as catalysis, which involve transition metals. The results of other phases of this work also impacts atmospheric chemistry and surface chemistry.