Abstract High-resolution (up to 0.0016 cm −1 unapodized) room temperature and collision-cooled (at ∼100 K) mid-infrared (1000–1300 cm −1 , 7.7–10 μm) absorption measurements of the ν 3 and ν 9 vibrational bands of difluoromethane (CH 2 F 2 , HFC-32) vapor were made with a Fourier transform spectrometer. A ro–vibrational analysis of over 900 infrared transitions has yielded quartic rotational constants, and the C -type Coriolis coupling ξ c 39 = 0.28802(11) cm −1 . The results are compared with a previous analysis [J. Matuszeski and M. Marshall, Spectrochim. Acta. A 52, 1069–1077 (1996)] of a jet-cooled spectrum.

中文翻译：

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二氟甲烷 ν3 和 ν9 吸收带的高分辨率分析

摘要 ν 3 和ν 9 的高分辨率（高达 0.0016 cm -1 未变迹）室温和碰撞冷却（约 100 K）中红外（1000-1300 cm -1 , 7.7-10 μm）吸收测量二氟甲烷（CH 2 F 2 ，HFC-32）蒸气的振动带是用傅立叶变换光谱仪制成的。对超过 900 次红外跃迁的旋转振动分析产生了四次旋转常数和 C 型科里奥利耦合 ξ c 39 = 0.28802(11) cm -1 。结果与之前的分析进行了比较 [J. Matuszeski 和 M. Marshall，Spectrochim。学报。A 52, 1069–1077 (1996)] 的喷射冷却光谱。