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High-resolution infrared spectra and rovibrational analysis of the ν12 band of propylene oxide
Physical Chemistry Chemical Physics ( IF 2.9 ) Pub Date : 2024-08-27 , DOI: 10.1039/d4cp02943g Karel Vávra 1 , Eileen Döring 1 , Jan Jakob 1 , Fabian Peterß 1 , Matin Kaufmann 1 , Pascal Stahl 1 , Thomas F Giesen 1 , Guido W Fuchs 1
Physical Chemistry Chemical Physics ( IF 2.9 ) Pub Date : 2024-08-27 , DOI: 10.1039/d4cp02943g Karel Vávra 1 , Eileen Döring 1 , Jan Jakob 1 , Fabian Peterß 1 , Matin Kaufmann 1 , Pascal Stahl 1 , Thomas F Giesen 1 , Guido W Fuchs 1
Affiliation
The high-resolution infrared spectrum of the fundamental band ν12 (ring breathing) of the chiral molecule propylene oxide (CH3CHCH2O) was recorded at room temperature and under jet-cooled conditions using a quantum cascade laser at 8 μm. The observed lines with quantum numbers J ≤ 55 and Ka ≤ 21 were assigned to strong b- and c-type bands, and some low J transitions were classified as weak a-type transitions. The lines were fitted using a Watsons A-reduced Hamiltonian in the Ir representation. From the rovibrational analysis the band origin as well as the rotational constants and four quartic centrifugal distortion constants were derived.
中文翻译:
环氧丙烷ν12带的高分辨率红外光谱和振动分析
手性分子环氧丙烷 (CH 3 CHCH 2 O) 基带 ν 12 (环呼吸)的高分辨率红外光谱是在室温和喷射冷却条件下使用 8 μm 量子级联激光器记录的。观察到的量子数J ≤ 55 和Ka ≤ 21 的线被分配给强b型和c型带,一些低J跃迁被归类为弱a型跃迁。这些线是使用 I r表示中的 Watsons A 简化哈密顿量进行拟合的。从旋转分析中得出能带原点以及旋转常数和四个四次离心畸变常数。
更新日期:2024-08-27
中文翻译:
环氧丙烷ν12带的高分辨率红外光谱和振动分析
手性分子环氧丙烷 (CH 3 CHCH 2 O) 基带 ν 12 (环呼吸)的高分辨率红外光谱是在室温和喷射冷却条件下使用 8 μm 量子级联激光器记录的。观察到的量子数J ≤ 55 和Ka ≤ 21 的线被分配给强b型和c型带,一些低J跃迁被归类为弱a型跃迁。这些线是使用 I r表示中的 Watsons A 简化哈密顿量进行拟合的。从旋转分析中得出能带原点以及旋转常数和四个四次离心畸变常数。