低温基质中asym-N_2O_4的红外光谱和紫外激光光解  

The FTIR Spectra and UV Laser Photolysis of asym N 2O 4 in Low Temperature Matrices

作　　者：丁飞 王雪峰 秦启宗 

出　　处：《复旦学报（自然科学版）》1999年第1期89-92,共4页Journal of Fudan University：Natural Science

基　　金：国家攀登计划项目资助课题

摘　　要：在低温Ａｒ和Ｏ２基质隔离条件下分别测定了ａｓｙｍ－Ｎ２Ｏ４的红外光谱．利用量子化学从计算，在ＭＰ２水平上以６－３１Ｇ＊和６－３１１Ｇ＊为基组，得到了ａｓｙｍ－Ｎ２Ｏ４的结构参数和振动频率，结合计算结果，对实验观察到的ａｓｙｍ－Ｎ２Ｏ４吸收峰进行了归属．采用３５５ｎｍ脉冲激光光解的方法，分别测定了在Ａｒ和Ｏ２基质中ａｓｙｍ－Ｎ２Ｏ４光解的产物。The FTIR spectra of asym N 2O 4(ONONO 2) have been measured in cryogenic matrices of Ar and O 2,respectively.The observed vibrational frequencies of asym N 2O 4 have been assigned with the help of obtained structure parameters and vibration frequencies of asym N 2O 4 from ab initio calculations at MP2/6 31G * and MP2/6 311G * levels.Asym N 2O 4 molecules isolated in both solid argon and oxygen are photodecomposed by 355 nm pulsed laser irradiation. The photolysis products are detected,the reaction mechanism is also discussed.

关 键 词：低温基质隔离 asym-N_2O_4 红外光谱 紫外激光光解 

分 类 号：O644.18[理学—物理化学] O657.33[理学—化学]