Francis E. Condon

Infrared and Mass Spectra of Some Deuterium‐Containing Derivatives of Propane

Infrared and mass spectra of 2‐deutero−2‐propanol (from acetone and lithium aluminum deuteride), 2‐chloro−2‐deuteropropane (from 2‐deutero−2‐propanol and concentrated HCl and ZnCl2), 2,2‐dideuteropropane (from 2‐chloro−2‐deuteropropane via the Grignard reagent and D2O), and 2‐deutero−2‐methylpropane (from t‐butylmagnesium chloride and D2O) are presented in comparison with the infrared and mass spectra of the corresponding compounds not substituted with deuterium.

Infra‐Red Spectra of Propane, 1‐Deuteropropane, and 2‐Deuteropropane and Some Revisions in the Vibrational Assignments for Propane

The infra‐red spectra of propane, 1‐deuteropropane, and 2‐deuteropropane are presented. The spectrum of propane does not have the bands at 720 and 1179 cm−1 reported by Wu and Barker.The vibrational modes of the three molecules are described. The 748‐cm−1 band in the propane spectrum is unambiguously assigned to rocking of the CH2 group about an axis normal to the molecular axis and in the C3 plane; and the 1053‐cm−1 band is unambiguously assigned to rocking of the CH2 group about an axis normal to the C3 plane.Unambiguous assignments for the remaining bands below 1350 cm−1 in the propane spectrum were not possible without an elaborate theoretical treatment beyond the scope of this paper.