Organometallic Chemistry of Electropositive Metals Supported by Macrocyclic Ligands

约翰·阿诺德博士，加州大学伯克利分校化学系，由化学系无机、生物无机和有机金属化学项目资助，致力于开发新的单阴离子配体。探讨了这些配体的早期过渡金属和镧系配合物的化学性质。主要推力是一系列新的单阴离子配体，这些配体将能够支持与目前由Cp基系统主导的化学相关的化学。具体来说，将开发新的功能化14元四氮杂环，制备它们与二价和三价金属的配合物，并研究它们的化学计量学和催化活性。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，人们在开发能够调整金属的化学反应性和性质的配体方面付出了相当大的努力。在这项研究中，将设计新的配体来促进与带2+和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开发用于2+和3+离子。该项目的一个重要目标是培养研究生和博士后水平的年轻科学家。

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. The chemistry of early transition metal and lanthanide complexes of the ligands will be explored. The major thrust is 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 14-membered tetraazamacrocycles will be developed, their complexes with di and 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 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 2+ and 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 2+ and 3+ counterparts. An important goal of the project is the education of young scientists at the graduate and postdoctoral level.