二酰基过氧化物的激光拉曼光谱表征  

Raman Spectral Characterization of Diacyl Peroxides

作　　者：陈林[1] 赵宇[1] 曲延玲[1] 赵成学[1] 

机构地区：[1]上海交通大学化学系,上海200240

出　　处：《分析化学》2002年第12期1422-1425,共4页Chinese Journal of Analytical Chemistry

基　　金：国家自然科学基金资助项目 (No .2 92 72 0 43;2 9972 0 31)

摘　　要：合成了全氟和其它对位、间位取代的共 1 0种过氧化苯甲酰 ,测定了它们的固体和溶液 (溶剂为F1 1 3 ,CCl2 FCClF2 )的激光拉曼光谱 ,首次发现这类化合物中高度对称的过氧键有较强的特征谱带 ,即νOO 在 85 0至899cm- 1 之间 ,并随取代基不同而呈现规律变化。苯环上的供电子取代基使νOO 移向低波数 ,而吸电子基则使νOO 移向高波数 ,由此确认拉曼光谱是一种鉴定对称过氧键的有效手段。本文还用相关分析的方法探讨了影响这类酰基过氧化物拉曼特征频率νCO 和νOO 的结构因素 ,表明极性效应是影响νCO 的主要因素 ,而影响νOOTen variously substituted benzoyl peroxides were synthesized for Raman spectrometric identification both in solution (CCl2FCClF2) and solid state. Different to infrared spectra, Raman spectra have been proved to be a useful characterization of the highly symmetric peroxy bond in diacyl peroxides. The nu(o-o) value ranged from 850 to 899 cm(-1) varies regularly with the substituent on the phenyl ring. With electron-releasing substituents, nu(o-o) value shifts to the lower frequencies, and with electron-withdrawing groups shifts to the higher frequencies. Correlation analysis has disclosed that the factors affecting nu(o-o) may be complicated though nu(o-o) is mainly affected by the polar effects.

关 键 词：激光拉曼光谱 表征 二酰基过氧化物 相关分析 结构 过氧化苯甲酰 

分 类 号：O657.3[理学—分析化学]