環状ジケトンの赤外部吸収スペクトル (第1報)

1,3-Cyclohexanedione誘導体のKeto-formについて

抄録

It has been found that the two split absorption bands observed in 1, 3-cyclohexanediones in dilute chloroform solution originating in the C=O stretching of the free diketone were found to give constant values for the distance between the two bands, ν₁ and ν₂, and the ratio of their intensity, without being affected by the substituent in the 4-position. Consequently, these two bands were assigned to splitting due to resonance coupling of C=O stretching vibration.