Spectroscopy of Metal Clusters

金属团簇的光谱学

• 批准号: 0078993
• 负责人: Michael Morse
• 金额: $ 35.66万
• 依托单位: University of Utah
• 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: 2000-08-01 至 2004-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0078993&HistoricalAwards=false
• 关键词: Spectroscopy; Metal; Clusters

Michael Morse of the University of Utah is supported by a grant from the Experimental Physical Chemistry Program to continue his investigations of chemical bonding and electronic structure of diatomic and polyatomic transition metal clusters with electronic spectroscopy. The measurements will be made on supersonic expansions of laser ablated metals using laser induced fluorescence, resonant two photon ionization and dispersed fluorescence spectroscopies. State symmetries, bond energies and lengths and vibrational frequencies will be determined for: (1) a series of 3d transition metal silicides and (2) 4 and 5d homonuclear transition metal diatomics . The studies will be extended to include a series of metal clusters including those containing aluminum, copper, silver, niobium and silicon.Metals have extremely important applications in catalysis. This study will obtain spectroscopic information about diatomic molecules and clusters of metal atoms to enable the strengths of bonds and other properties of the molecules to be determined. The properties of the diatomic molecules will be compared with those calculated using current theories and those of the larger clusters will form a connection to the properties of the bulk solid.

犹他州大学的Michael莫尔斯得到实验物理化学计划的资助，继续用电子光谱法研究双原子和多原子过渡金属簇合物的化学键合和电子结构。 用激光诱导荧光、共振双光子电离和色散荧光光谱对激光烧蚀金属的超声膨胀进行了测量。 我们将测定下列化合物的状态对称性、键能、键长和振动频率：（1）一系列3d过渡金属硅化物和（2）4d和5d均方过渡金属硅化物。 这些研究将扩展到包括铝、铜、银、铌和硅的一系列金属簇合物。金属在催化方面有着极其重要的应用。 这项研究将获得有关双原子分子和金属原子簇的光谱信息，以确定分子的键强度和其他性质。 双原子分子的性质将与使用当前理论计算的性质进行比较，而较大的团簇的性质将与大块固体的性质形成联系。