Rotational Spectroscopy of Small Clusters

小团簇的旋转光谱

• 批准号: 9413380
• 负责人: H. Gutowsky
• 金额: $ 31.36万
• 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: 1994
• 资助国家: 美国
• 起止时间: 1994-12-01 至 1998-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9413380&HistoricalAwards=false
• 关键词: Rotational; Spectroscopy; Small; Clusters

In this project in the Physical Chemistry Program of the Chemistry Division, Prof. H.S. Gutowsky of the Chemistry Department of the University of Illinois at Urbana-Champaign will engage in a series of continuing investigations on the structure and dynamics of weakly bound, van der Waals and hydrogen bonded, molecular complexes. The technique employs a gas mixture cooled to near zero kelvins by a supersonic expansion into a high vacuum and studied by pulsed Fourier transform microwave spectroscopy. Specifically, complexes containing benzene dimers, complexes formed by rare gas atoms with hydrogen cyanide, and those formed by argon with water will be investigated. In addition, ongoing work on alkali halide dimer complexes will be continued. Weakly bound clusters are an intermediate form of matter that form when gaseous molecules condense to form liquids or solids. The structure and dynamics of such clusters is of interest for obtaing an understanding of intermolecular forces on a molecular level, for understanding of protein folding, the orientation and mobility of molecules on catalytic surfaces, and other phenomena. The research conducted by the PI provides critical data and models for the bonding of molecules by weak intermolecular forces.

在这个项目中的物理化学计划的化学 H. S.教授大学化学系的古托斯基 伊利诺伊大学厄巴纳-香槟分校将开展一系列 继续研究弱束缚的结构和动力学， 货车范德华力和氢键，分子复合物。 该技术 采用了一种由超音速冷却到接近零开尔文的气体混合物， 膨胀到高真空，并通过脉冲傅里叶变换研究 微波光谱学 具体地，含有苯的络合物 二聚体，稀有气体原子与氰化氢形成的络合物，以及 将研究由氩与水形成的那些。 此外，本发明还提供了一种方法， 关于碱金属卤化物二聚体络合物的正在进行的工作将继续进行。 弱束缚星系团是物质的一种中间形式， 气体分子凝结成液体或固体。 结构和 这种集群的动力学是感兴趣的获得理解， 分子水平上的分子间力， 折叠，定向和流动性的分子上的催化 表面和其他现象。 PI进行的研究提供了 关键数据和模型的分子键弱 分子间力