Knowledge Bank

“In order to supplement and to verify the results of measurements of absorption intensities of benzene films reported $earlier,1$ we have begun the measurement and analysis of the reflection spectrum of solid benzene. The data have been analyzed according to the method of Robinson and $Price2$ to give the index of refraction and absorption coefficient as a function of frequency. The integrated absorption coefficient obtained in this way has then been compared with the value obtained from direct absorption measurements for the 1036 and 680$cm-1$ fundamental vibration bands of solid benzene. The values for the $1036cm-1$ band are in reasonable agreement but the two measurements for the $680cm-1$ band are in obvious disagreement. No satisfactory explanation for this discrepancy has yet been given.”