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Australian Journal of Chemistry Australian Journal of Chemistry Society
An international journal for chemical science
RESEARCH ARTICLE

Pyrrole studies. VIII. The NH stretching frequencies of substituted pyrroles Acetyl and benzoyl substituents

RW Guy and RA Jones

Australian Journal of Chemistry 19(1) 107 - 113
Published: 1966

Abstract

The infrared spectra of a number of acylpyrroles have been examined in the NH and CO stretching region under high resolution in carbon tetrachloride. Analysis of the data show-s that the effect of each group on the NH stretching frequency is independent of other substituents and additive. Pyrroles having the acyl substituent in the β-position show two concentration-independent bands. The lower frequency band arises from interaction with the out-of-plane deformation of the NH group, producing a hot band.

https://doi.org/10.1071/CH9660107

© CSIRO 1966

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