Structure and Dynamics of Small Clusters and Transient Species

小团簇和瞬态物种的结构和动力学

• 批准号: 8820359
• 负责人: H. Gutowsky
• 金额: $ 26.11万
• 依托单位: University of Illinois at Urbana-Champaign
• 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: 1988-11-01 至 1992-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8820359&HistoricalAwards=false
• 关键词: Structure; Dynamics; Small; Clusters; Transient

This research, part of the Experimental Physical Chemistry Program, is designed to observe the microwave spectra of binary and higher order clusters containing rare gas and small molecular species. This research provides the data necessary to understand the chemical bonding, dynamics and structure of these simple molecular species. In addition unique nozzle designs necessary for the simultaneous pyrolytic decompositon and expansion of a molecule to yield reaction intermediates will be developed. Among the species to be studied are argon clusters with HF containing up to five argon atoms and 6 HF molecular units, carbon dioxide dimers and clusters containing carbon dioxide and hydrogen cyanide. Nozzle designs will be developed to directly observe reaction intermediates which have been simultaneously formed by pyrolysis and cooled by supersonic cooling. This expansion in a rare gas bath will both simplify the observed spectrum and isolate the reactive intermediate. Species to be studied include some silicon carbon prototypical molecules.

这项研究是实验物理化学计划的一部分，旨在观察含有稀有气体和小分子物种的二元和更高阶团簇的微波光谱。这项研究为理解这些简单分子物种的化学键、动力学和结构提供了必要的数据。此外，还将开发独特的喷嘴设计，用于分子同时热解分解和膨胀以产生反应中间体。要研究的物种包括含有多达5个Ar原子和6个Hf分子单元的Hf的Ar簇合物、二氧化碳二聚体以及含有二氧化碳和氰化氢的簇合物。将开发喷嘴设计，以直接观察同时通过热解和超声冷却形成的反应中间体。这种在稀有气浴中的膨胀既可以简化观察到的光谱，又可以分离出反应中间体。待研究的物种包括一些硅碳原型分子。