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High resolution spectroscopy of six SOCl2 isotopologues from the microwave to the far-infrared
The Journal of Chemical Physics ( IF 3.1 ) Pub Date : 2016-02-24 17:15:31 , DOI: 10.1063/1.4942024 M. A. Martin-Drumel 1 , A. Roucou 2 , G. G. Brown 3 , S. Thorwirth 4 , O. Pirali 5 , G. Mouret 2 , F. Hindle 2 , M. C. McCarthy 1 , A. Cuisset 2
The Journal of Chemical Physics ( IF 3.1 ) Pub Date : 2016-02-24 17:15:31 , DOI: 10.1063/1.4942024 M. A. Martin-Drumel 1 , A. Roucou 2 , G. G. Brown 3 , S. Thorwirth 4 , O. Pirali 5 , G. Mouret 2 , F. Hindle 2 , M. C. McCarthy 1 , A. Cuisset 2
Affiliation
Despite its potential role as an atmospheric pollutant, thionyl chloride, SOCl2, remains poorly characterized in the gas phase. In this study, the pure rotational and ro-vibrational spectra of six isotopologues of this molecule, all detected in natural abundance, have been extensively studied from the cm-wave band to the far-infrared region by means of three complementary techniques: chirped-pulse Fourier transform microwave spectroscopy, sub-millimeter-wave spectroscopy using frequency multiplier chain, and synchrotron-based far-infrared spectroscopy. Owing to the complex line pattern which results from two nuclei with non-zero spins, new, high-level quantum-chemical calculations of the hyperfine structure played a crucial role in the spectroscopicanalysis. From the combined experimental and theoretical work, an accurate semi-experimental equilibrium structure (reSE) of SOCl2 has been derived. With the present data, spectroscopy-based methods can now be applied with confidence to detect and monitor this species, either by remote sensing or in situ.
中文翻译:
六种SOCl2同位素从微波到远红外的高分辨率光谱
尽管它具有潜在的大气污染物作用,但亚硫酰氯,SOCl 2,在气相中的表征仍然很差。在这项研究中,通过三种互补技术,广泛地研究了从厘米波段到远红外区域都以自然丰度检测到的该分子的六个同位素的纯旋转和旋转振动光谱。脉冲傅立叶变换微波光谱,使用倍频链的亚毫米波光谱以及基于同步加速器的远红外光谱。由于由两个非零自旋核形成的复杂线型,超细结构的新的高级量子化学计算在光谱分析中起着至关重要的作用。通过结合实验和理论工作,可以得出准确的SOCl 2半实验平衡结构(reSE)已派生。利用目前的数据,现在可以放心地应用基于光谱学的方法通过遥感或就地检测和监测该物种。
更新日期:2016-02-25
中文翻译:
六种SOCl2同位素从微波到远红外的高分辨率光谱
尽管它具有潜在的大气污染物作用,但亚硫酰氯,SOCl 2,在气相中的表征仍然很差。在这项研究中,通过三种互补技术,广泛地研究了从厘米波段到远红外区域都以自然丰度检测到的该分子的六个同位素的纯旋转和旋转振动光谱。脉冲傅立叶变换微波光谱,使用倍频链的亚毫米波光谱以及基于同步加速器的远红外光谱。由于由两个非零自旋核形成的复杂线型,超细结构的新的高级量子化学计算在光谱分析中起着至关重要的作用。通过结合实验和理论工作,可以得出准确的SOCl 2半实验平衡结构(reSE)已派生。利用目前的数据,现在可以放心地应用基于光谱学的方法通过遥感或就地检测和监测该物种。