A semi-classical and a semi-empirical methods are employed to obtain line-broadening coefficients for the ${\nu }_6$ band of CH${}_3$I-N${}_2$ at room temperature (296 K). Calculations are performed for lines in the R, P and Q branches in a broad range of rotational quantum numbers ($0\le J\le 70,$ $K\le 20$) typically required for spectroscopic databases. The results demonstrate a good consistency with available Voigt-profile measurements. Owing to the negligible vibrational dependence, our data for the ${\nu }_6$ fundamental can be used for other parallel and perpendicular bands.

中文翻译：

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室温CH${}_3$在${}_{\mathrm{2个}}$ 扩宽系数 ${\nu }_6$ 基本的

采用半经典和半经验方法来获得线的扩宽系数。 ${\nu }_6$ CH带${}_3$在${}_{\mathrm{2个}}$在室温下（296 K）。在宽旋转量子数范围内，针对R，P和Q分支中的线进行计算（$0\le Ĵ\le 70，$ $ķ\le 20$），通常是光谱数据库所必需的。结果表明与可用的Voigt轮廓测量具有良好的一致性。由于振动相关性可忽略不计，因此我们的数据${\nu }_6$ 基波可以用于其他平行和垂直频带。