State Resolved Chemical Dynamics of Excited Metal Ions by Photodissociation Spectroscopy

通过光解光谱法研究激发金属离子的状态分辨化学动力学

• 批准号: 9982119
• 负责人: Paul Kleiber
• 金额: $ 38.12万
• 依托单位: University of Iowa
• 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: 2000-02-15 至 2004-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9982119&HistoricalAwards=false
• 关键词: State; Resolved; Chemical; Dynamics; Excited

Paul Kleiber of the University of Iowa is funded by the Experimental Physical Chemistry Program to continue his spectral studies of the photodissociation of weakly bonded metal (calcium, zinc, aluminum, boron, etc.) complexes with hydrogen, small alkanes and aldehyde hydrocarbons . The project will also extend the work to more risky studies, including those of the metal superoxides of calcium and iron. This will yield product branching between reactive and quenching pathways, translational energy partition and vector anisotropy. Fundamental information will be obtained on bonding and bond strengths, structures, nuclear motion dynamics, electronic nonadiabatic interactions and steric hindrance effects. The experiments will be performed using a supersonic expansion molecular beam apparatus with reflectron, time of flight, mass spectrometry and laser photodissociation.The studies will show how weakly bonded clusters molecules break up after they have been exposed to laser light. This provides information on the reaction pathways, on the structure of the complex and on the strengths of the bonds. As well as the fundamental chemical interest, the work has applications to atmospheric, biological and catalytic situations.

爱荷华州大学的Paul Kleiber得到实验物理化学计划的资助，继续他对弱键金属（钙、锌、铝、硼等）的光解的光谱研究。与氢、小烷烃和醛烃的络合物。 该项目还将把工作扩展到更危险的研究，包括钙和铁的金属超氧化物。 这将产生反应和淬灭途径之间的产物分支、平移能量分配和矢量各向异性。 将获得有关键合和键强度、结构、核运动动力学、电子非绝热相互作用和位阻效应的基本信息。 实验将使用超声膨胀分子束装置，结合反射器、飞行时间、质谱和激光光解进行，研究弱键合的分子团簇在暴露于激光后如何分解。 这提供了有关反应途径、络合物结构和键强度的信息。 除了基本的化学兴趣，这项工作还应用于大气，生物和催化情况。