Chemistry of Anionic Clusters of the P-Block Elements

无机化学、生物无机化学和金属有机化学计划中的这个项目涉及所谓的过渡后元素的化学，包括硒、碲、砷和锡。这些元素的阴离子簇，即带负电荷的原子簇，已经知道了一段时间，但对这些簇的化学知之甚少。该项目的重点是这些团簇与过渡金属，如铬和Nb的反应，形成各种不寻常的新的混合元素团簇。这些新物种之所以令人感兴趣，是因为它们是新材料的可溶前体，也因为它们对现有的成键理论提出了有趣的挑战。将研究过渡后元素团簇阴离子，如三硒醚、四硒酸根和十一锡根离子与过渡金属络合物的反应。目标是制备同时包含过渡元素和主族元素的新型团簇阴离子。将开发稳定溶液中团簇阴离子的策略，例如引入碳作为杂原子。为了制备目标簇合物，我们将研究主族阴离子簇合物与过渡金属卤化物以及各种有机金属化合物的反应。

This project in the Inorganic, Bioinorganic and Organometallic Chemistry Program is concerned with the chemistry of the so-called post transition elements, which include selenium, tellurium, arsenic and tin. Anionic clusters of these elements, i.e. clusters of atoms with negative charges, have been known for some time, but little is known about the chemistry of these clusters. The focus of the project is the reactions of these clusters with transition metals, such as chromium and niobium, to form a variety of unusual new mixed-element clusters. The new species are of interest because they are soluble precursors of new materials, and because they pose interesting challenges to existing bonding theories. The reactions of post transition element cluster anions, such as the triselenide, the tetratelluride and the nonastannide ions, with transition metal complexes will be investigated. The goal is to prepare new cluster anions containing both transition and main group elements. Strategies will be developed for stabilizing the cluster anions in solution, such as the introduction of carbon as a heterovertex atom. For the preparation of the target clusters the reactions of main group anionic clusters with transition metal halides and with a variety of organometallic compounds will be investigated.