The vapor spectra of some purine and pyrimidine bases are presented. Vapor pressures of adenine and 9-methyladenine have been determined in order to obtain absolute intensities. Heats of vaporization are also determined from the spectral data. 193 (1963).
The spectra of some purine and pyrimidine bases are presented. Correlations found among the bands of these bases and some related compounds suggest that the electronic states of all the bases are simply derived from those of benzene. A classijication of the spectral bands is presented which leads to polarization directions and p H dependence consistent with experiment.
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