有机亚碘酰化合物的研究(Ⅲ)——不同取代基对取代亚碘酰苯中亚碘酰基IO的红外吸收波数■_(IO)的相关分析

Study on Organo-Iodoso Compounds(Ⅲ)——The Correlation Analysis of IR Vibration Frequency of 10 Group in the Substituted lodosobenzene to the Substituent Constant

本文研究了不同取代亚碘酰苯的IO基红外特征吸收峰■和■_s,分别为亚碘酰化合物聚合态结构中的反对称振动和对称振动。它们与取代基常数σ_(I)、σ_(R)^(O)、E_(s)间都存在着线性关系。

Two characteristic absorption peaks for I-O group of some substituted iodosobcn-zencs were identified in the region 320-625cm-1 by comparing the 1R spectra of the substituted iodosobenzenes with corresponding substituted iodobenzen.es.These two peaks could be assigned to asymmetric vibration vas and symmetric vibration vsof group in the polymeric structure of these iodosocompoumds.The cor-relation of vIO to the substituent constantsσ1,σk0 and Es was studied by linear regression analysis.The linear regression equations of the para substituent and meta substituent were obbtained as follows:para.■_(IO)=■■+■■+C meta;■_(IO)=■■+■■+SE,+C.