Photoion and Photoelectron Spectroscopy of Metal Clusters and Complexes

金属簇合物和配合物的光子和光电子能谱

• 批准号: 1012351
• 负责人: Dong-Sheng Yang
• 金额: $ 44.57万
• 依托单位: University of Kentucky Research Foundation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-09-15 至 2014-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1012351&HistoricalAwards=false
• 关键词: Photoion; Photoelectron; Spectroscopy; Metal; Clusters

In this project supported by the Chemical Structure, Dynamics and Mechanisms Program of the Division of Chemistry, Professor Dong-Sheng Yang of the University of Kentucky and his research group will investigate the bonding and structures of reactive gaseous metal clusters and metal-molecule complexes. Emphasis will be placed on early transition metal cluster oxides, which are relevant to catalysis, and lanthanide-benzene complexes, which are relevant to organometallic synthesis and also pose a challenge to quantum theories of chemical bonding. These short-lived chemical species will be prepared in laser-vaporization molecular beams, identified with photoionization mass spectrometry, and studied using a variety of techniques including zero electron kinetic energy photoelectron, mass analyzed threshold ionization, and infrared-ultraviolet photoionization spectroscopy. Combining the spectroscopic data and theoretical predictions will allow for the characterization of electronic states and molecular structures. This research project will lead to new knowledge about the size-dependent structures and electronic properties of the metal clusters and metal-ligand binding and energetics of the metal complexes. The results will be of interest to practitioners in organometallic chemistry, surface sciences, materials synthesis, and chemical catalysis. This project provides technologically challenging research training opportunities for students and postdoctoral associates to prepare them effectively for careers in industry or academia.

本研究项目由美国肯塔基州大学的杨东升教授及其研究小组在化学系化学结构、动力学和机理研究计划的资助下，对反应性气态金属团簇和金属分子复合物的成键和结构进行研究。重点将放在早期过渡金属簇氧化物，这是相关的催化，和镧系元素-苯配合物，这是相关的有机金属合成，也构成了化学键合的量子理论的挑战。这些短寿命的化学物种将在激光蒸发分子束中制备，用光电离质谱法鉴定，并使用各种技术进行研究，包括零电子动能光电子，质量分析阈值电离和红外-紫外光电离光谱。结合光谱数据和理论预测将允许表征电子状态和分子结构。该研究项目将导致对金属簇合物的尺寸依赖性结构和电子性质以及金属-配体结合和金属络合物的能量学的新知识。结果将感兴趣的从业者在有机金属化学，表面科学，材料合成和化学催化。 该项目为学生和博士后提供了技术上具有挑战性的研究培训机会，使他们有效地为工业或学术界的职业生涯做好准备。