单质硫ν_(S-S)伸缩振动的漫反射红外光谱研究

Study on the Stretching Vibration of Sulfur(S-S) by DRIFTS

采用傅里叶变换漫反射红外光谱法,在500~400cm^(-1)范围内研究了单质硫S-S键伸缩振动红外吸收模式(νS-S)的一维漫反射红外光谱、二阶导数漫反射红外光谱、四阶导数漫反射红外光谱和去卷积漫反射红外光谱,并针对单质硫νS-S,进一步开展了相关二维漫反射红外光谱研究。结果表明:单质硫νS-S的红外吸收频率主要包括464,466,468,474cm^(-1),而其红外吸收强度的变化顺序为464cm^(-1)>474cm^(-1)>468cm^(-1)>466cm^(-1)。

A study on the sulfur S--S stretching vibration （vs-s） based on their one dimensional IR, 2nd derivative IR, 4th derivative IR and deconvolution IR spectrograms obtained by DRIFTS in the range of 500- 400 cm 1 was made, and special attention was paid on the stretching vibration of sulfur by using the diffuse reflectance two-dimensional IR spectrograms. It was shown that vs-s appeared near 464, 466, 468 and 474 cm 1, and intensity of IR absorption of vs s changed in the order of 464 cm-1 〉474 cm-1〉468 cm-1〉466 cm 1.