Electron structure and substituent effects in o-,m-,p-IC_6H_4OCH_3 iodoanisoles  

作　　者：TONG ShengRui,WANG WeiGang,MA ChunPing,GE MaoFa & WANG DianXun Beijing National Laboratory for Molecular Sciences(BNLMS),State Key Laboratory for Structural Chemistry of Unstable and Stable Species,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China 

出　　处：《Science China Chemistry》2009年第11期1932-1937,共6页中国科学（化学英文版）

基　　金：Supported by the National Natural Science Foundation of China (Grant No. 20673123)

摘　　要：The electronic structures and substituent effects in o-,m-,and p-iodoanisoles have been investigated by ultraviolet photoelectron spectroscopy(UPS).The observed UPS bands were analyzed by combining empirical arguments and theoretical methods.Owing to the electron-donating nature of both iodoand methoxy substituents,the first ionization potentials of the three iodoanisoles are lower than those of iodobenzene and anisole.The presence of the two substituents in iodoanisoles leads to an electronrich structure,which might contribute to the observed high reactivity of iodoanisoles in a number of organic reactions.The electronic structures and substituent effects in o-,m-,and p-iodoanisoles have been investigated by ultraviolet photoelectron spectroscopy(UPS).The observed UPS bands were analyzed by combining empirical arguments and theoretical methods.Owing to the electron-donating nature of both iodoand methoxy substituents,the first ionization potentials of the three iodoanisoles are lower than those of iodobenzene and anisole.The presence of the two substituents in iodoanisoles leads to an electronrich structure,which might contribute to the observed high reactivity of iodoanisoles in a number of organic reactions.

关 键 词：ELECTRONIC structures SUBSTITUENT effects ULTRAVIOLET PHOTOELECTRON SPECTROSCOPY REACTIVITY 

分 类 号：O621.2[理学—有机化学]