Knowledge Bank

The far infrared spectra (600 to $75cm-1$) of a series of crystalline n-dicarboxylic acids, $COOH(CH2)nCOOH$ for $n=3$ to 8, have been obtained mostly in vaseline mulls with the aid of a Perkin-Elmer Model 301 Spectrometer. These spectral data were used in conjunction with the infrared and Raman data previously $reported1$ to verify and extend the interpretation of the crystalline n-dicarboxylic acids. The far infrared spectra of the series $COOH(CH2)12COOH,CH3(CH2)12COOH$, and $CH3(CH2)12CH2OH$ have also been recorded. The skeletal vibrations observed in this region for this series appear to confirm the recent calculations of $Okada.2$