红外技术, 2017, 39 (1): 95, 网络出版: 2017-03-29
硫脲 νN-C=S红外光谱研究
Infrared Spectroscopy Study of Thiourea νN-C=S
摘要
测定硫脲分子 N-C=S伸缩振动模式( νN-C=S)的红外光谱( IR)。研究发现: 在 1500 cm-1~ 1430 cm-1、1450 cm-1~1350 cm-1和 1120 cm-1~1050 cm-1的频率范围内, 硫脲分子 νN-C=S分子中分别存在着 3个特征谱带, 分别归属于 νN-C=S(Ⅰ)-1、νN-C=S(Ⅱ)和 νN-C=S(Ⅲ)。最后采用二维红外光谱技术(2D-IR)进一步来研究温度变化对于硫脲 νN-C=S红外吸收强度及其变化顺序的影响。本项研究拓展了二维红外光谱技术在 νN-C=S的研究范围。
Abstract
The thioureas N-C=S stretching vibration modes(νN-C=S) were studied by infrared spectroscopy (IR). The key frequency bands were discovered in the band regions of 1500 cm-1-1430 cm-1 (νN-C=S(Ⅰ)-1)、 1450 cm-1-1350 cm-1 (νN-C=S(Ⅱ)) and 1120 cm-1-1050 cm-1 (νN-C=S(Ⅲ)). The temperature effect on νN-C=S intensity and change order were discussed also. The study demonstrated the key roles of two-dimensional infrared spectroscopy (2D-IR) in the analysis of thermal characters of νN-C=S.
李莉, 王震洲, 师鹏, 刘子玮, 宋亚环, 于宏伟. 硫脲 νN-C=S红外光谱研究[J]. 红外技术, 2017, 39(1): 95. LI Li, WANG Zhenzhou, SHI Peng, LIU Ziwei, SONG Yahuan, YU Hongwei. Infrared Spectroscopy Study of Thiourea νN-C=S[J]. Infrared Technology, 2017, 39(1): 95.