Spectroscopic Studies of Small Clusters

小团簇的光谱研究

• 批准号: 8903133
• 负责人: Martin Vala
• 金额: --
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-08-01 至 1992-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8903133&HistoricalAwards=false
• 关键词: Spectroscopic; Studies; Small; Clusters

Professor Vala is supported by the Experimental Physical Chemistry Program and the Chemical Instrumentation Program in spectroscopic studies of the electronic and magnetic properties of dimeric and trimeric transition metal clusters (both homonuclear and heteronuclear), small carbon clusters, and metal carbides, all isolated in rare gas matrices. These species can play central roles in heterogeneous catalysis, nucleation, chemisorption, and organo-metallic chemistry. Details of ground and excited state assignments, magnetic moments, spin-orbit splittings, and cluster geometries are being learned using a variety of techniques, including absorption, magnetic circular dichroism (MCD), magnetic linear dichroism (MLD), MCD and MLD saturation spectroscopy, Fourier transform infrared spectroscopy, and double resonance techniques (visible/infrared and microwave/MCD). Also being studied are various interactions with the supporting matrix, including crystal field splittings, site symmetries, and Jahn-Teller interactions.

Vala教授得到了实验物理学的支持。 化学计划和化学仪器计划 电子和磁性的光谱研究 二聚和三聚过渡金属簇合物（均 同素异构体和异素异构体），小碳簇，和 金属碳化物，全部隔离在稀有气体基质中。 这些 物种可以在多相催化中发挥核心作用， 成核、化学吸附和有机金属化学。 基态和激发态分配的详细信息， 矩，自旋轨道分裂，和集群的几何形状是 使用各种技术学习，包括 吸收，磁性圆二色性（MCD），磁性线性 二色性（MLD），MCD和MLD饱和光谱，傅立叶 变换红外光谱和双共振 技术（可见光/红外和微波/MCD）。 也是 研究了与支撑基质的各种相互作用， 包括晶场分裂，位置对称性， Jahn-Teller相互作用