A new method for observing the rotational spectra of weak molecular complexes: KrHCl
A new method for observing the rotational spectra of weak molecular complexes: KrHCl
复制标题
观察弱分子配合物旋转光谱的新方法：KrHCl
DOI：
--
复制
发表时间：
1979
期刊：
影响因子：
--
通讯作者：
W. Flygare
中科院分区：
文献类型：
--
作者：
T. Ballé;E. J. Campbell;M. Keenan;W. Flygare
本文描述了一种将微波傅里叶变换光谱技术、法布里-珀罗腔技术和脉冲喷嘴源技术相结合来观测弱分子络合物转动跃迁的新方法。具有较高的分辨率和较好的灵敏度。归属了KrHCl分子的12种同位素，包括86Kr、84Kr、82Kr、H、D、35Cl和37Cl同位素的所有组合，并给出了转动常数、氯核四极耦合常数和离心形变常数。分子结构表明H(D)原子位于Kr和Cl原子之间，呈线性平衡结构。然而，这里测量的逆转动惯量表明H(D)原子相对于Kr-Cl核间谱线有较大幅度的振动。还给出了Kr-Cl伸缩频率和力常数的估计值，表明它们与同位素物种有很大的相关性。给出了弯曲频率和力常数。
A new method of observing the rotational transitions of weak molecular complexes by combining the techniques of microwave Fourier transform spectroscopy, a Fabry–Perot cavity, and a pulsed nozzle source of molecules is described. High resolution and good sensitivity are achieved. Twelve isotopic species of the KrHCl molecule involving all combinations of the 86Kr, 84Kr, 82Kr, H, D, 35Cl, and 37Cl isotopes are assigned and the rotational constants, Cl nuclear quadrupole coupling constants, and centrifugal distortion constants are all given. The molecular structure indicates a linear equilibrium structure with the H(D) atom between the Kr and Cl atoms. However, the inverse moments of inertia measured here indicate large amplitude vibrations of the H(D) atom relative to the Kr–Cl internuclear line. Estimates of the Kr–Cl stretching frequency and force constants, which show considerable dependence on the isotopic species, are also given. Bending frequencies and force constants are also given.