The Structure and Dissociation Dynamics of Energy Selected Ions and Ion-Dipole Complexes

实验物理化学的这项资助支持以下研究： 托马斯·贝尔博士在离子碎裂机制领域。 这项工作 研究能量选择离子的结构和离解动力学 和离子偶极复合物。 它提供了有关 离子的性质和能量状态。这些信息是必要的， 从高层大气物理学到固态物理学， 化学. 本研究将利用光电子光离子符合， 光解离和红外光解离技术来研究冷 离子如硝基苯、丙醇和丁二烯，以及离子偶极 络合物如环丙烷离子-水和氯乙烷离子-HCl。 中性和离子解离之间的差异，如 它们的机制、解离速率以及 将比较碎裂步骤中的激发态。 毛 离子结构的变化将作为以下函数进行研究： 他们的内部能量。 将特别强调如何规避 分离碎片之间的相互作用潜力的影响 对解离速率和机制的影响。

This grant in Experimental Physical Chemistry supports the research of Dr. Tomas Baer in the area of ion fragmentation mechanisms. This work studies the structure and dissociation dynamics of energy selected ions and ion-dipole complexes. It provides basic information on the properties and energy states of ions. Such information is necessary in a broad range of fields from upper atmosphere physics to solid state chemistry. This investigation will use photoelectron photoion coincidence, photodissociation, and IR photodissociation techniques to study cold ions such as nitrobenzene, propanol, and butadiene and ion-dipole complexes such as cyclopropane ion-water and ethylchloride ion-HCl. Differences between neutral and ionic dissociations, as revealed in terms of their mechanisms, rates of dissociation, and the role of excited states in the fragmentation step will be compared. Gross changes in the structures of the ions will be studied as a function of their internal energy. Special emphasis will be given to eludicating the effect the interaction potential between the departing fragments has on the dissociation rate and mechanism.