RECEIVED ARCH 13, 1061 ci. sp-Clilorobenzoplienoiie methylimiiie (cis-I) atid trans-P- nitrobenzopheilone methylimine (trans-11) liave beeii obtained as crystalliiie solids and found to rearrange to tlie equilil~ rium mixtures of cis and tram isomers in cyclohexane solu- tim at room temperature and above. Examination of available infrared data suggests that the position of the monosubstituted phenyl absorption in the 700 cm. region may be used to ...