STUDIES IN THE INFRARED - I [1(-) allo - hydroxyproline and rutile]

Abstract

The infrared absorption spectra of 1(-) allo-hydroxy proline and rutile have been investigated using a Perkin Elmer Model 112 single beam recording spectrometer. The spectrum of the former consists of 13 bands in the region I to 13 and it has been found possible to explain these with the help of the known approximate frequencies of the structural groups and the chemical constitution of 1.(-) allo-hydroxyproline.On the other hand the absorption spectrum of ruffle reveals a rather broad absorption from 1,700 cm.' to 1,975 cm. -' and also two bands at - 1,548 and 1,524 cm. \-1 These three bands and also the four bands observed by Randall et al. for white rouge between 8 to 15 p, are found to coincide with the approximate calculated frequencies of the infrared active combinations and harmonics of the frequencies of rutile.