NH_3配合物的分子束微波谱研究

Molecular Beam Microwave Spectrometric Studies of Ammonia Complexes

本文报导了几个弱键合的NH_3配合物的微波波谱研究的结果.这些结果,有些是用分子束电共振光谱仪装置得到的,有些是用脉冲喷嘴付立叶变换微波光谱仪装置得到的.(NH_3)_2和Ar-NH_3配合物的微波谱表明,这两个体系是非刚性的.对各种同位素的NH_3二聚物的J=0,K=0跃迁和Ar-NH_3的△J=1,K=0跃迁进行了归属,并给出了它们的光谱常数.在讨论中实验与量子化学理论计算作了比较.

This paper reports the results of microwave spectroscopic stu-dies of several van der Waals complexes of NH_3.The some results wereobtained with an apparatus of molecular beam electric resonance spectro-meter,the others were obtained with an apparatus of pulsed nozzle Four-ier transform microwave spectrometer.The microwave spectroscopy of thecomplexes(NH_3)_2 and Ar—NH_3 show that both systems are nonrigid.Thetransitions were assigned for J=0,K=0,transitions for the isotopomers ofammonia dimer and ΔJ=1,K=0 transitions for the isotopomers of Ar—NH_3,and gave their spectroscopic constants.The results of the experiments andtheoretical calculations of the quantum chemistry have been compared duringdiscussing them.