Expanding the Limits of the Coordination of Molecular Hydrogen

9412830印第安纳大学考尔顿分校-布鲁明顿印第安纳大学布鲁明顿分校化学系Kenneth G.Caulton博士得到化学部无机、生物无机和有机金属化学计划的支持，研究与催化活性的后过渡金属相连的氢配体的结构和功能。将开发形成含有氢化物和二氢配体的Os、铂和Rh的络合物的方法。将评估配体结合和交换的动力学和热力学，以及这些分子内的磁交换机制。将尝试将二氢配位扩展到新的金属和新的氧化态。这些研究的结果将被用于设计新的催化剂，特别是烯烃水合反应。氢分子可能会被相互作用的金属原子激活。这一特性在实验室和工业化学中已被长期利用，以提高氢发生许多反应的能力。另一方面，随着人们对氢作为清洁燃料的兴趣增加，氢与金属之间的相互作用已成为一个重要的话题。这个项目将评估氢与金属结合的基本方式。利用这些数据，将设计新的含氢化合物，并将开发一种新的方法，执行在工业上非常重要的加水到不饱和有机化合物中，即“烯烃水合”。

9412830 Caulton Indiana Univ. - Bloomington Dr. Kenneth G. Caulton, Chemistry Department, University of Indiana at Bloomington, is supported by the Inorganic, Bioinorganic, and Organometallic Chemistry Program of the Chemistry Division for an investigation of the structure and function of hydrogen ligands which are attached to catalytically active late transition metals. Methods of forming complexes of osmium, platinum, and rhodium which contain hydride and dihydrogen ligands will be developed. The kinetics and thermodynamics of ligand binding and exchange, and the mechanism of magnetic exchange within these molecules will be evaluated. Attempts will be made to extend dihydrogen coordination to new metals and to new oxidation states. The results of these studies will be utilized to design new catalysts for, in particular, olefin hydration. Hydrogen molecules may become activated by interacting metal atoms. This property has been exploited for a long time in both laboratory and industrial chemistry to increase the ability of hydrogen to undergo many reactions. In another respect, the interactions between hydrogen and metals has become an important topic with the increased interest in hydrogen as a clean fuel. This project will evaluate the fundamental ways in which hydrogen becomes attached to a metal. Using this data, new compounds containing hydrogen will be designed and a new method of performing the industrially very important addition of water to an unsaturated organic compound, i.e. "olefin hydration", will be developed.