Chemistry of Anionic Clusters of the P-Block Elements

无机、生物无机和有机金属化学专业的这个项目关注的是所谓的后过渡元素的化学，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，已经被发现有一段时间了，但对这些簇的化学性质知之甚少。该项目的重点是这些簇与过渡金属（如铬和铌）的反应，形成各种不同寻常的新型混合元素簇。这些新物种之所以引起人们的兴趣，是因为它们是新材料的可溶性前体，而且它们对现有的键合理论提出了有趣的挑战。研究了过渡后元素簇阴离子（如三硒化物、四碲化物和非锡化物）与过渡金属配合物的反应。目标是制备新的簇阴离子，同时包含过渡族元素和主族元素。将开发稳定溶液中簇阴离子的策略，例如引入碳作为异交层原子。为了制备目标簇，将研究主基团阴离子簇与过渡金属卤化物和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.