Multiply - Bonded and Low-Coordinate Silicon and Germanium Compounds

乘法 - 键合和低配位硅和锗化合物

• 批准号: 9901266
• 负责人: Robert West
• 金额: $ 31.5万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-06-01 至 2002-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9901266&HistoricalAwards=false
• 关键词: Multiply; Bonded; Low; Coordinate; Silicon

With the support of the Organic Synthesis Program, Professor Robert West, of the Department of Chemistry at the University of Wisconsin, studies the synthesis, structure, and bonding of multiply-bonded and low-coordinate silicon and germanium compounds. Specific classes of compounds under investigation include silynes, disilynes, metallole dianions, and metallacalicenes, as well as other compounds containing new types of double bonds between silicon or germanium and other atoms. Professor West is also exploring the chemistry of stable dicoordinate silicon compounds (silylenes) and their complexes with transition metals and the vaporization of carbon in the presence of silicon tetrachloride, producing silicon-containing fullerene derivatives.Many questions remain unanswered about the nature of chemical bonding, particularly with regards to the bonding between elements other than carbon. Professor Robert West, of the Department of Chemistry at the University of Wisconsin, is supported by the Organic Synthesis Program for his studies of the synthesis and structure of compounds containing silicon and germanium atoms displaying unusual chemical bonding motifs. Of particular interest to Professor West are those compounds which display multiple bonds to these elements (e.g., silicon-carbon and silicon-silicon triple bonds) and those in which these elements bear fewer bonds than usual (e.g., dicoordinate silicon compounds). Finally, by inclusion of chemical sources of silicon atoms in the carbon vaporization synthesis of fullerenes ("Bucky balls"), Professor West is preparing silicon-containing fullerenes. Observations from each of these studies promise to afford fundamental advances in our understanding of the nature of chemical bonding.

在有机合成计划的支持下，威斯康星州大学化学系的Robert West教授研究了多键和低配位硅和锗化合物的合成、结构和键合。 正在研究的化合物的具体类别包括硅炔、二硅炔、金属配合物二价阴离子和金属杂环戊二烯，以及在硅或锗与其他原子之间含有新型双键的其他化合物。 West教授还在探索稳定的二配位硅化合物（硅烯）及其与过渡金属的络合物的化学，以及在四氯化硅存在下碳的蒸发，生产含硅富勒烯衍生物。关于化学键合的本质，特别是关于碳以外的元素之间的键合，还有许多问题没有答案。 威斯康星州大学化学系的罗伯特·韦斯特教授因其对含有硅和锗原子的化合物的合成和结构的研究而获得有机合成计划的支持，这些化合物显示出不寻常的化学键合基序。 韦斯特教授特别感兴趣的是那些与这些元素显示多重键的化合物（例如，硅-碳和硅-硅三键）和其中这些元素具有比通常更少的键的那些（例如，二配位硅化合物）。 最后，通过在碳蒸发合成富勒烯（“巴基球”）中加入硅原子的化学源，韦斯特教授正在制备含硅富勒烯。 这些研究中的每一项观测都有望为我们对化学键性质的理解提供根本性的进步。