Chemistry of Anionic Clusters of the P-Block Elements

P 区元素阴离子簇的化学

• 批准号: 8802217
• 负责人: Joseph Kolis
• 金额: $ 21.19万
• 依托单位: Clemson University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-04-15 至 1991-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8802217&HistoricalAwards=false
• 关键词: Chemistry; Anionic; Clusters; Block; Elements

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.

该项目在无机，生物无机和有机 化学计划关注的是化学的 所谓的后过渡元素，包括硒， 碲砷和锡这些元素的阴离子簇， 即带有负电荷的原子簇 一段时间以来，人们对这些化合物的化学性质知之甚少， 集群该项目的重点是这些反应 具有过渡金属的簇，例如铬和铌， 形成各种不寻常的新混合元素簇。的 新的物种是令人感兴趣的，因为它们是可溶性前体 新材料，因为它们带来了有趣的挑战， 现有的成键理论 后过渡元素簇阴离子，如 作为三硒化物、四碲化物和九锡化物， 离子，与过渡金属络合物将进行研究。的 目标是制备新的簇阴离子， 过渡族和主族元素。战略将 开发用于稳定溶液中的簇阴离子，例如 作为杂顶点原子引入碳。为 目标团簇的制备 阴离子簇与过渡金属卤化物和 将研究各种有机金属化合物。