The v 1 band of (NO)2
The v 1 band of (NO)2
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DOI：
10.1080/00268979300100061
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发表时间：
1993
影响因子：
1.7
通讯作者：
B. Howard;A. Mckellar
中科院分区：
文献类型：
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作者：
B. Howard;A. Mckellar
使用长光程 (84 m) 低温 (83·5 K) 气室和傅里叶变换红外光谱仪研究了 NO 二聚体的 v 1 谱带。在1840至1900 cm-1区域测量了超过440条(NO)2谱线，分辨率为0·008 cm-1，并分配给垂直(Δka = ± 1)跃迁，J和Ka值分别高达35和16。使用 s 简化的不对称转子哈密顿量对这些测量结果以及之前的四个微波跃迁进行了分析，以便获得 (NO)2 在基态和 v 1 = 1 振动状态下的精确旋转和四次离心畸变参数。就本实验而言，NO 二聚体表现为正常、平面、半刚性分子，没有观察到扰动，只有适度的离心畸变效应，并且由于振动激发而导致的参数变化很小。 (NO)2 线的观测强度用于估计 D 0 二聚体的解离能值 = 639 ± 35 cm...
The v 1 band of the NO dimer has been studied using a long-path (84 m) low-temperature (83·5 K) gas cell and a Fourier transform infrared spectrometer. Over 440 lines of (NO)2 have been measured in the 1840 to 1900 cm-1 region, with a resolution of 0·008 cm-1, and assigned to perpendicular (Δka = ± 1) transitions with J and Ka values up to 35 and 16, respectively. These measurements were analysed, along with the four previous microwave transitions, using an s-reduced asymmetric rotor Hamiltonian in order to obtain accurate rotational and quartic centrifugal distortion parameters for (NO)2 in its ground and v 1 = 1 vibrational states. As far as this experiment is concerned, the NO dimer behaves as a normal, planar, semi-rigid molecule, with no observed perturbations, only modest centrifugal distortion effects, and only small changes in parameters due to vibrational excitation. The observed intensities of (NO)2 lines were used to estimate a value for the dissociation energy of the dimer of D 0 = 639 ± 35 cm...