MICROWAVE SPECTRUM OF METHYLAMINE
MICROWAVE SPECTRUM OF METHYLAMINE
复制标题
DOI：
10.1143/jpsj.9.974
复制
发表时间：
1954-01-01
影响因子：
1.7
通讯作者：
ITOH, T
中科院分区：
文献类型：
--
作者：
SHIMODA, K;NISHIKAWA, T;ITOH, T
研究了甲胺分子在7 ~ 30kmc /sec频率范围内的微波谱。已经测量了200多条线及其斯塔克效应。这些线分为三种：(1)ΔJ= 0， ΔK=±1,(2)ΔJ=±1，ΔK=\mp1, (3) ΔJ= 0， ΔK= 0。ΔJ= 0和ΔK=±1的直线构成了七个定义明确的级数，p1, p2, q1, q2, r1， r2和s1。其中p系列的线条表现为一阶Stark效应，其他线条表现为二阶Stark效应。从理论上考虑，我们分配了这些级数。根据这一分配，内部旋转受阻的势垒高度被确定为约680 cm−1。研究了反转加倍及其对整体旋转和受阻旋转的影响。对(2)和(3)类的行也进行了分析。但是，从观测数据中确定分子常数的工作将推迟到即将发表的论文中。
Microwave spectrum of methylamine molecule has been studied in the frequency range between 7 and 30 kMc/sec. More than two hundred lines and their Stark effects have been measured. These lines are divided into three kinds:(1) ΔJ= 0, ΔK=±1,(2) ΔJ=±1, ΔK=\mp1, and (3) ΔJ= 0, ΔK= 0. Lines of ΔJ= 0 and ΔK=±1 form seven well-defined series, p 1, p 2, q 1, q 2, r 1, r 2, and s 1. Among them, lines of p series show first-order Stark effects and the others show second-order Stark effects. With theoretical considerations we have assigned these series. From this assignment, the height of the potential barrier for the hindered internal rotation has been determined to be about 680 cm− 1. Inversion doubling and its effect on the over-all and hindered rotations are studied. Lines belonging to the classes (2) and (3) are also analyzed. But the determination of molecular constants from the observed data is deferred to a forthcoming paper.