以间质隔离法研究CH3O分子在p-H2间质中的红外吸收光谱
Study on the infrared absorption spectra of CH3O molecules in p-H2 by matrix isolation method

本研究利用低温间质隔离技术搭配红外光谱仪研究CH3ONO在p-H2间质中的光解产生CH3O。实验观察到位于689.3/694.6cm-1、945.9/951.7cm-1、1041.8cm-1、1224.7cm-1、1235.5cm-1、1347.7cm-1、1365.4cm-1、1427.5cm-1、1519.5cm-1、1522.3cm-1等处的CH3O红外吸收谱线，并分析得出各振动模式分别为电子态E1/2a1对称性的ν6、电子态E1/2a2对称性的ν6、电子态E3/2对称性的ν2、电子态E3/2e对称性的ν6、电子态E1/2e对称性的ν6、电子态E1/2a1对称性的ν5、电子态E3/2对称性的ν2、电子态E1/2对称性的ν2、电子态E3/2e对称性的ν5及电子态E1/2e对称性的ν5。
CH3O is produced by CH3ONO photo-degradation in p-H2 matrix and its infrared absorption spectra is studied by low temperature matrix isolation method and infrared spectrometer. The experimental results show that the infrared absorption spectral lines located at 689.3/694.6cm-1、945.9/951.7cm-1、1041.8cm-1、1224.7cm-1、1235.5cm-1、1347.7cm-1、1365.4cm-1、1427.5cm-1、1519.5cm-1、1522.3cm-1 are observed and their vibration modes are analyzed. The corresponding vibration modes are symmetric ν6 of electronic state E1/2a1, symmetric ν6 of electronic state E1/2a2, symmetric ν2 of electronic state E2/3, symmetric ν6 of electronic state E2/3e, symmetric ν6 of electronic state E1/2e, symmetric ν5 of electronic state E1/2a1, symmetric ν2 of electronic state E3/2, symmetric ν2 of electronic state E1/2, symmetric ν5 of electronic state E2/3e, and symmetric ν5 of electronic state E1/2e.