Metal Complexes with Sterically Hindered Tellurolate Ligands

具有空间位阻碲酸盐配体的金属配合物

• 批准号: 9019675
• 负责人: John Arnold
• 金额: $ 8.8万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-01-15 至 1993-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9019675&HistoricalAwards=false
• 关键词: Metal; Complexes; Sterically; Hindered; Tellurolate

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.

在化学学部无机、生物无机和有机金属项目中，Arnold将研究含有位阻碲酸盐配体的金属配合物。这项研究的长期目标是通过与相关的烷氧化物和硫酸盐的比较，更好地定义碲酸盐配体的配位化学，在此过程中，为设计各种可能有用的固态材料的分子前体提供合理的依据。一系列含碲的金属化合物由于具有新颖的化学、光学和电子性质而引起了人们的广泛关注。然而，与与这些材料的固态特性相关的大量数据相比，我们在离散金属-碲键的化学方面的知识仍然存在很大的差距。该项目概述了旨在通过研究结合有机碲配体的金属配合物来发展这种相互作用的一般化学的工作。这项工作的一个特别重点是通过探索新的合成途径来更好地定义碲酸盐配体的配位化学，这些合成途径是由庞大的芳基、烷基、硅基和相关取代基组成的离散的单体碲酸盐物种。这种类型的方法可以与相应的醇酸盐和硫酸盐的最新进展进行比较，其中使用大体积配体导致对金属-氧和金属-硫键的性质有了更详细的了解。由于已知的金属碲酸盐相对较少，为了解决有关键合和反应性的具体问题，这种化学将在广泛的主族和过渡元素范围内发展。