Optical and Microwave-Molecular Beam Studies of Transient Chemical Compounds

在这个项目中，在实验物理化学计划， 化学部，激光和微波分子束 光谱技术将用于（1）获得旋转 常数、超精细常数和永久电偶极子 Sc、Ag和Pt的过渡金属簇的矩及其 （2）研究CH的预解离; (3)通过测量MgOH中的质子， 磁超精细常数 第一项研究提供了测试， 从头计算，而第二个是一种方法，检查 在避免的交叉中混合的两种状态的性质。 由于各州的电子特性不同， 移位提供了一些信息，可以用来推断 混合水平集。 在第三个问题中，观察到的常数 可以提供关于势能面形状的信息。 %%% 本研究的目的是简化光谱， 来研究那些非常短暂的 （瞬态）气相物质。 一些非常复杂的化学键 含有过渡金属的基本化学物质将是 研究了 理解这种键合是重要的， 表面科学和无机化学，并对 催化作用

In this project in the Experimental Physical Chemistry Program of the Chemistry Division, laser- and microwave-based molecular beam spectroscopic techniques will be used (1) to obtain rotational constants, hyperfine constants, and permanent electric dipole moments of transition metal clusters of Sc, Ag, and Pt and their hydrides and carbides; (2) to study the predissociation of CH; and (3) to study the vibronic problem in MgOH by measuring the proton magnetic hyperfine constants. The first study provides tests for ab initio calculations, while the second is a way of examining the nature of two states which become mixed in an avoided crossing. Since the states differ in their electronic character, the Stark shifts provide some information which can be used to deduce the mixing set of levels. In the third problem the observed constants can provide information about the potential energy surface shape. %%% The goal of this research is to simplify optical spectra in order to study the dynamics and structure of very short-lived (transient) gas phase species. The chemical bonding in some very fundamental chemical species containing transition metals will be investigated. An understanding of such bonding is important in surface science and inorganic chemistry, and has implications for catalysis.