Kinetic and Mechanistic Studies of Carbenes, Silylenes, and Germylenes

卡宾、硅烯和甲锗烷的动力学和机理研究

• 批准号: 8802677
• 负责人: Peter Gaspar
• 金额: $ 37.5万
• 依托单位: Washington 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: 1988-05-01 至 1991-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8802677&HistoricalAwards=false
• 关键词: Kinetic; Mechanistic; Studies; Carbenes; Silylenes

This grant in Organic and Macromolecular Chemistry provides support for the research of Dr. Peter Gaspar, Washington University. This work is focused on studies of short-lived species in carbon, silicon, and germanium chemistry. An understanding of such species, particularly those of silicon and germanium, has important practical implications because they may be important in a number of industrial processes, especially ones in the semiconductor industry. A coordinated set of experiments will be carried out to elucidate chemical reaction mechanisms for short-lived molecules containing divalent carbon, silicon and germanium atoms. A complete understanding of the factors influencing their reactivity will enhance the ability to control their highly useful reactions. Another goal of this project is to determine how the mechanistic ideas of organic chemistry need to be modified to deal with bond-making and bond cleavage below the first-row of the periodic table. This knowledge will extend the usefulness of these ideas in the domain of organometallic chemistry and also enhance their effectiveness in dealing with pure organic chemistry. The rates of reaction of silicon and germanium analogs of important intermediates in organic chemistry will be studied as will the preparation of new types of molecules containing multiple bonds to silicon. The experiments combine the synthesis of new molecules with physical studies of species too short-lived to isolate. Among the latter experiments are the generation of reactive molecules by use of nanosecond pulses of photons from lasers and the monitoring of these short-lived reactions on a time scale of picoseconds to milliseconds.

这项在有机和大​​分子化学方面获得的赠款为华盛顿大学彼得·加斯帕尔博士的研究提供了支持。这项工作的重点是对碳，硅和锗化学中短寿命物种的研究。对这种物种的理解，尤其是硅和锗的物种具有重要的实际含义，因为它们在许多工业过程中可能很重要，尤其是在半导体行业的工业过程中。 将进行一组协调的实验，以阐明含有二价碳，硅和也原子的短寿命分子的化学反应机制。 对影响其反应性的因素的完全理解将增强控制其非常有用的反应的能力。 该项目的另一个目标是确定如何修改有机化学的机械思想，以处理元素元素第一行以下的粘结和粘结裂解。 这些知识将扩大这些思想在有机化化学领域的有用性，并增强其在处理纯有机化学方面的有效性。 将研究有机化学中重要中间体的硅和锗类似物的反应速率，制备含有多个键与硅的新分子的制备。 实验结合了新分子的合成与太短生物无法分离的物种的物理研究。 在后一个实验中，通过使用激光器的光子的纳米脉冲来产生反应性分子，并在picseconds的时间范围内监测这些短寿命反应到毫秒。