Synthesis, Structure and Reactivity of Metal Complexes With Sterically Demanding Chalcogenolate Ligands

该项目由无机、生物无机和有机金属化学项目资助，涉及具有主基和过渡金属中心的碲酸盐和硒酸盐配体的研究。重点是配体含有大量的烷基、硅基或芳基取代基，从而形成单体配合物。这些配合物的反应性研究将包括硫族化物的位移/取代，插入到M-ER （E = Te, Se）键，E中心的反应和E- r键的裂解。这项研究的长期目标是将这种化学物质与被广泛研究的醇氧化合物和硫化物同系物放在相同的基础上。作为该项目的一部分，将研究利用分子硫族化合物作为固态材料前体的潜力。这个项目涉及硒和碲的基础化学研究。与这个家族中较轻的元素（硫属元素）不同，人们对这些元素的分子化学的关注相对较少，主要是因为处理它们很困难。尽管它们是技术上重要设备的组成部分，如红外探测器、可充电电池、光热成像材料和光伏太阳能电池等。阿诺德教授是一位优秀的合成无机化学家，他所奠定的基础可能会导致这些元素的化学方面取得一些令人兴奋的进展，也可能导致技术领域的进步。

This project, funded by the Inorganic, Bioinorganic and Organo-metallic Chemistry Program, involves the study of tellurolate and selenolate ligands with both main group and transition metal centers. The focus is on ligands that contain bulky alkyl, silyl or aryl substituents such that monomeric complexes are formed. Studies of the reactivity of these complexes will include chalcogenide displacement/substitution, insertions into the M-ER (E = Te, Se) bond, reactions of the E center, and cleavage of the E-R bond. The long term objective of the research is to put this chemistry on the same basis as the much studied alkoxide and sulfide congeners. The potential for use of the molecular chalcogenide compounds as precursors for solid-state, materials will be examined as part of the project. %%% This project involves the study of the fundamental chemistry of selenium and tellurium. Unlike the lighter elements in this family (the chalcogenides), relatively little attention has been given to the molecular chemistry of these elements, primarily because of the difficulty of working with them. This is in spite of the fact that they are constituents of technologically important devices such as infrared detectors rechargeable batteries, photothermic imaging materials and photovoltaic solar cells to name a few. Professor Arnold, an excellent synthetic inorganic chemist, has laid the groundwork that could lead to some exciting advances in the chemistry of these elements and potentially to advances in technology arenas as well.