Lepère M, Blanquet G, Walrand J, Tarrago G
Laboratoire de Spectroscopie Moléculaire, Facultés Universitaires Notre-Dame de la Paix, 61, rue de Bruxelles, Namur, B-5000, Belgium
J Mol Spectrosc. 1998 Jun;189(2):137-43. doi: 10.1006/jmsp.1998.7537.
The absolute strengths of 93 lines belonging to the nu2 and nu5 bands of methyl fluoride were measured in the range of 1416-1503 cm-1 using a tunable diode-laser (TDL) spectrometer. These experimental line intensities were obtained from the equivalent width method. The intensities were analyzed within a dyad system, required to account properly for the strong Coriolis coupling between nu2 and nu5. The fit to the experimental data led to the determination of the dipole moment derivatives partial differentialµ/ partial differentialq2 and partial differentialµ/ partial differentialq5, as well as the first-order Herman-Wallis correction in K to partial differentialµ/ partial differentialq5. The intensities were reproduced with an overall standard deviation of 1.44%, to be compared with a mean experimental uncertainty equal to 1.58%. The values derived for the vibrational band strengths of nu2 and nu5 are 2.124 (18) cm-2.atm-1 and 36.96 cm-2.atm-1 at 296 K, respectively. Copyright 1998 Academic Press.
使用可调谐二极管激光（TDL）光谱仪在1416 - 1503 cm-1范围内测量了属于氟甲烷ν2和ν5带的93条谱线的绝对强度。这些实验谱线强度是通过等效宽度法获得的。在一个二重态系统内对强度进行了分析，这是正确考虑ν2和ν5之间强科里奥利耦合所必需的。对实验数据的拟合得出了偶极矩导数∂µ/∂q2和∂µ/∂q5的测定结果，以及K对∂µ/∂q5的一阶赫尔曼 - 沃利斯校正。强度再现的总体标准偏差为1.44%，与之相比，平均实验不确定度为1.58%。在296 K时，ν2和ν5振动带强度得出的值分别为2.124 (18) cm-2·atm-1和36.96 cm-2·atm-1。版权所有1998年，学术出版社。
