Synthesis and Chemistry of Zintl-Transition Metal Clusters

Zintl-过渡金属簇合物的合成与化学

• 批准号: 8806205
• 负责人: Kenton Whitmire
• 金额: --
• 依托单位: William Marsh Rice 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: 1988-07-15 至 1991-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8806205&HistoricalAwards=false
• 关键词: Synthesis; Chemistry; Zintl; Transition; Metal

This project in the Inorganic, Bioinorganic and Organometallic Chemistry Program is concerned with cluster compounds containing both transition metals and main group atoms, particularly the so-called Zintl compounds. The synthesis and chemistry of such cluster complexes will be developed to understand the fundamental bonding patterns in these compounds. Of particular interest is the creation of discrete complexes which have similarities to the Zintl cluster anions and related Zintl phases. Classical main group atom-containing transition metal carbonyls will be treated with ligands such as CO, and their reduction chemistry will be explored following routes which have been successful for some known clusters of this type. Efforts will center around the heavy elements, namely Tl, Pb and Bi. Plans include exploration of the direct use of various types of alloys for discrete cluster synthesis, including some of the Zintl phases and main group/transition metal alloys. Reactions of bismuth-iron carbonyl and of thallium-iron carbonyl cluster anions will be examined as sources of high nuclearity substances. Compounds will be characterized by single-crystal X-ray diffraction, magnetic measurements, electron microscopy and NMR, Moessbauer and IR spectroscopies as appropriate. The reactions under investigation in this project have strong implications for solid state chemistry and materials science as well as catalysis.

该项目属于无机、生物无机和有机金属化学专业，主要研究包含过渡金属和主基团原子的簇状化合物，特别是所谓的Zintl化合物。这类簇状配合物的合成和化学将被开发，以了解这些化合物的基本键模式。特别令人感兴趣的是创造出与Zintl簇阴离子和相关Zintl相相似的离散配合物。经典的含有主基团原子的过渡金属羰基将用CO等配体处理，并将按照一些已知的这种类型的簇已经成功的路线探索它们的还原化学。努力将集中在重元素，即Tl、Pb和Bi上。计划包括探索直接使用各种类型的合金进行离散簇合成，包括一些Zintl相和主要的族/过渡金属合金。铋-羰基铁和铊-羰基铁簇阴离子的反应将作为高核物质的来源加以研究。化合物将通过单晶x射线衍射、磁测量、电子显微镜和核磁共振、穆斯堡尔和红外光谱进行表征。本项目研究的反应对固体化学和材料科学以及催化具有重要意义。