Dipole moment measurements have been carried out on 2,3-butanedione in solution, pure liquid, and the vapor phase. A dipole moment of 1.03 ± 0.01 D was observed for dilute solutions of 2,3-butanedione in carbon tetrachloride at 298.15 K. Pure liquid samples at 298.15 K exhibit an anomalous dipole of 1.36 ± 0.01 D.The following results were obtained for vapor phase measurements: 1.

Während das Dipolmoment der Titelverbindung in CCl4‐Lösung bei 298,15 K 1,03 D beträgt, wird für die reine Flüssigkeit der anomale Wert von 1,36 D gemessen.