Organometallic and Coordination Chemistry with New Monoanionic Ligands

约翰·阿诺德博士，加州大学伯克利分校化学系，受化学系无机、生物无机和有机金属化学项目的支持，致力于开发新的单阴离子配体，以支持催化和化学计量反应。主要的推动力是制备一系列新的单阴离子配体，这些配体将能够支持与目前以Cp为基础的体系相关的化学反应。具体来说，将开发新的功能化脒和衍生化1,4,7-三氮杂环壬烷，制备它们与三价金属的配合物，并研究它们的化学计量学和催化反应性。过渡金属和镧系元素化合物介导的反应在工业规模上是重要的，并提供了关于化学键性质的不断增加的基础知识。近年来，人们在开发配体（附着在金属上的基团）方面付出了相当大的努力，这些配体将调整金属的化学反应活性和性质。在这项研究中，将设计新的配体来促进与带3+电荷的金属离子的反应。这是一个重要的目标，因为已知在4+离子中发生的许多重要过程尚未有效地针对3+离子进行开发。

Dr. John Arnold, Chemistry Department, University of California - Berkeley, is supported by the Inorganic, Bioinorganic, and Organometallic Chemistry Program of the Chemistry Division for the development of new monoanionic ligands to support catalytic and stoichiometric reactions. The major thrust is to prepare a new series of monoanion ligands that will be capable of supporting chemistry related to that presently dominated by Cp based systems. Specifically new functionalized amidines and derivatized 1,4,7-triazacyclononanes will be developed, their complexes with trivalent metals prepared, and their stoichiometric and catalytic reactivity investigated.Reactions mediated by transition metal and lanthanide element compounds are important on an industrial scale and provide ever increasing fundamental knowledge regarding the nature of the chemical bond. In recent years, there has been considerable effort in developing ligands (groups that are attached to a metal) that will tailor the chemical reactivity and properties of the metal. In this study new ligands will be designed to facilitate reactions at metal ions with a 3+ charge. This is an important goal since many important processes that are known to take place at 4+ ions have not yet been efficiently developed for 3+ counterparts.