Metal Complexes with Sterically Hindered Tellurolate Ligands

在这个项目中，无机，生物无机和有机- 化学系的金属计划，阿诺德将研究 含有空间位阻碲酸盐的金属配合物 配体。 研究的长期目标是更好地 定义碲酸盐配体的配位化学， 与相关的醇盐和硫醇盐进行比较， 从而为分子设计提供合理的依据 各种潜在有用的固态前体 材料. 相当多的注意力集中在一系列金属上 由于其新颖的化学性质而引入碲的化合物， 光学和电子性质。 与大型 有关这些固态属性的数据主体 然而，在材料方面，我们仍然存在很大的差距。 与离散金属碲的化学相关的知识 债券 该项目概述了旨在发展 通过研究金属与金属之间的相互作用， 有机碲配体的配合物。 特定 工作的重点是更好地确定协调 碲酸盐配体化学：探索新的合成 路线离散，单体碲酸盐物种与庞大的 芳基、烷基、甲硅烷基和相关取代基。 这种类型的 这种方法可以与最近的进展相比较， 醇盐和硫醇盐，其中使用大体积配体导致 更详细地了解 金属-氧和金属-硫键。由于相对较少的金属 碲酸盐是已知的，这种化学反应将在 广泛的主族和过渡元素， 以解决有关键合和反应性的具体问题。

In this project in the Inorganic, Bioinorganic, and Organo- metallic Program of the Chemistry Division, Arnold will study metal complexes containing sterically hindered tellurolate ligands. The long term goals of the research are to better define the coordination chemistry of tellurolate ligands via comparisons with related alkoxides and thiolates and, in doing so, to provide a rational basis for the design of molecular precursors to a variety of potentially useful solid-state materials. Considerable attention has been focused on a range of metal compounds incorporating tellurium due to their novel chemical, optical and electronic properties. In contrast to the large body of data pertaining to the solid-state properties of these materials, however, there continues to exist a large gap in our knowledge relating to the chemistry of discrete metal-tellurium bonds. This project outlines work aimed at developing the general chemistry of such interactions by studying metal complexes incorporating organotellurium ligands. A particular focus of the work is to better define the coordination chemistry of tellurolate ligands by probing new synthetic routes to discrete, monomeric tellurolate species with bulky aryl, alkyl, silyl and related substituents. This type of approach can be compared to recent advances in corresponding alkoxide and thiolates, where use of bulky ligands has resulted in a much more detailed understanding of the properties of metal-oxygen and metal-sulfur bonds. Since relatively few metal tellurolates are known, this chemistry will be developed across a broad spectrum of main group and transition elements in order to address specific questions regarding bonding and reactivity.