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首页> 外文期刊>Physical chemistry chemical physics: PCCP >High-resolution Fourier-transform infrared spectroscopy of the nu(2) fundamental band of thionyl fluoride, SOF2
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High-resolution Fourier-transform infrared spectroscopy of the nu(2) fundamental band of thionyl fluoride, SOF2

机译：亚硫酰氟SOF2 nu（2）基带的高分辨率傅里叶变换红外光谱

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The high-resolution vibration rotation spectrum of the nu(2) fundamental band of gas-phase thionyl fluoride, SOF2, has been observed centred at 808 cm(-1). Spectra were recorded in absorption using a Fourier-transform spectrometer with the sample of SOF2 held in a gas cell at a temperature of 294 K. In total, 1929 a- and c-type vibration-rotation transitions of the most abundant isotopomer, (SOF2)-S-32-O-16, have been assigned and included in a least-squares fit. The least-squares analysis, performed using a standard semi-rigid rotor Hamiltonian, has yielded precise spectroscopic parameters for the nu(2) = 1 level. The analysis confirms the assignment of the band to excitation of the symmetric S-F stretching vibration. Additional, partially resolved features are attributed to the Q-branches of the nu(2) fundamental band of (SOF2)-S-34-O-16 and of nu(2) difference bands from low-lying excited vibrational levels. [References: 18]
机译：气相亚硫酰氟化物SOF2的nu（2）基带的高分辨率振动旋转光谱已观察到以808 cm（-1）为中心。使用傅里叶变换光谱仪将吸收的光谱记录下来，将SOF2样品保存在温度为294 K的气室中。总共有1929个最丰富的同位素（a SOF2）的a和c型振动-旋转转变）-S-32-O-16，已分配并包含在最小二乘拟合中。使用标准半刚性转子哈密顿量进行的最小二乘法分析得出了nu（2）= 1级的精确光谱参数。分析证实了将频带分配给对称S-F拉伸振动的激发。另外，部分解析的特征归因于（SOF2）-S-34-O-16的nu（2）基带的Q分支和来自低层激发振动能级的nu（2）差异带。 [参考：18]

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