Abstract
Infrared spectra of 48 kinds of phenylsulfonyl derivatives were measured and the substituent influence on the SO2 stretching frequency was discussed in terms of electronic effects. In each series of homolog of phenyl 2-chloroethyl sulfone, 2-mesyloxyethyl sulfone, vinyl sulfone, and ethyl sulfone, the linear correlation of vas with Hammett's σ of p-substituent was recognized. It was also observed that β-substituents such as chloro- and mesyloxy- exert a certain degree of effect on the frequency shift, respectively. The SO2 stretching vibration of phenyl vinyl sulfone derivatives appeared in somewhat upward wave number compared with that of phenyl ethyl sulfone series.
