Metal Cluster Synthesis and Ligand Transformations

金属簇合成和配体转化

• 批准号: 9014662
• 负责人: Duward Shriver
• 金额: $ 36.46万
• 依托单位: Northwestern University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-07-01 至 1994-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9014662&HistoricalAwards=false
• 关键词: Metal; Cluster; Synthesis; Ligand; Transformations

The focus of this project in the Inorganic, Bioinorganic and Organometallic Chemistry Program is the chemistry of transition metal cluster compounds, which constitute an important class of industrial catalysts. The project is expected to provide a better understanding of the way in which such clusters are assembled and of the transformations of organic molecules bound to the clusters. Two important areas of metal cluster chemistry will be addressed: ligand transformations on clusters and the synthesis of new types of mixed-metal clusters. In the former area the recent finding of ways to split the C-O bond of the CCO ligand will be exploited. The mechanism of this reaction will be studied, and the cleavage of the C-O bond will be utilized to synthesize a variety of new substituted acetylide ligands bound to three-metal clusters. These ligands will permit systematic studies of the very large substituent effects on C-C cleavage reactions for substituted acetylene ligands bound to metal clusters. Cluster building reactions based on the cleavage of the C-O bond should provide a new route to clusters containing C2 moieties. In the second area of metal cluster research, the synthesis and physical characterization of new types of early- late transition metal cluster compounds will be explored.

该项目在无机、生物无机和有机金属化学专业的重点是过渡金属簇化合物的化学，这是一类重要的工业催化剂。该项目有望更好地了解这些簇的组装方式以及与簇结合的有机分子的转化。将讨论金属簇化学的两个重要领域：簇上的配体转化和新型混合金属簇的合成。在前一个领域，将利用最近发现的分裂CCO配体的C-O键的方法。研究该反应的机理，并利用C-O键的裂解合成多种新型取代乙酰基配体与三金属簇结合。这些配体将允许系统地研究与金属簇结合的取代乙炔配体对C-C裂解反应的非常大的取代基效应。基于C-O键断裂的成簇反应为生成含C2基团的簇提供了一条新的途径。在金属团簇研究的第二个领域，将探索新型早-晚过渡金属团簇化合物的合成和物理表征。