Infrared spectrum study of tetraethyl orthosilicate
Liu Lei1, Feng Xiaoyan1, Zhou Erpeng1, Wang Lixin1, Zhou Juan1, Xiao Xiao1, #br#
Wei Xiaoqing2, Yu Hongwei1
1. Chemical Engineering School of Shijiazhuang University, Shijiazhuang 050035, China; 2. Shijiazhuang Power
Fine Chemical Corporation Ltd., Shijiazhuang 052160, China
采用红外光谱（IR 光谱）技术开展了正硅酸乙酯的结构研究。正硅酸乙酯 IR 光谱主要包括一维 IR 光谱、二阶及四阶导数 IR 光谱和去卷积 IR 光谱。实验发现：正硅酸乙酯主要存在着ν■、ν■、ν■、νasSi-O-正硅酸乙酯 和 νsSi-O-正硅酸乙酯 等5种红外吸收模式；正硅酸乙酯去卷积 IR 光谱的谱图分辨能力要优于相应的一维 IR 光谱、二阶及四阶导数 IR 光谱。本项研究显示出 IR 光谱在重要的有机化工中间体（正硅酸乙酯）结构分析中的重大作用。
The tetraethyl orthosilicate molecular structure had been studied by infrared spectrum (IR spectrum)which includs one dimensional IR spectrum, second derivative IR spectrum, fourth derivative IR spectrum and deconvolution IR spectrum. Five infrared absorption modes of tetraethyl orthosilicate were found, which are ν■ orthosilicate, ν■ orthosilicate, ν■ orthosilicate, νasSi-O-tetraethyl orthosilicate and νsSi-O-tetraethyl orthosilicate. The tetraethyl orthosilicate deconvolution IR spectrum is superior to one dimensional IR spectrum, second derivative IR spectrum and fourth derivative IR spectrum. It is demonstrated the key roles of IR spectrum in the analysis of structure of the important organic chemical intermediates (tetraethyl orthosilicate).
