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

能量选择离子和离子偶极配合物的结构和离解动力学

• 批准号: 8706766
• 负责人: Tomas Baer
• 金额: $ 33.5万
• 依托单位: University of North Carolina at Chapel Hill
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-06-15 至 1990-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8706766&HistoricalAwards=false
• 关键词: Structure; Dissociation; Dynamics; Energy; Selected

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.

实验物理化学中的这项赠款支持Tomas Baer博士在离子碎片机制领域的研究。 这项工作研究了能量选定离子和离子偶极复合物的结构和解离动力学。 它提供了有关离子的性质和能量状态的基本信息。从高层物理学到固态化学，在广泛的领域中，这种信息是必要的。 这项研究将使用光电子光照相的重合，光解离和IR光解离技术来研究冷离子，例如硝基苯，丙醇，丁二醇，丁二醇和离子偶极络合物，例如环丙烷离子 - 含量 - 含量 - 氯化物 - 氯化物和乙基氯离子-HCl。 中性和离子解离之间的差异将比较其机制，解离率以及激发态在碎片步骤中的作用。 将研究离子结构的总变化，这是其内部能量的函数。 将特别强调阐明离职片段对解离率和机制之间的相互作用潜力的影响。