Abstract
The molecular structures of isopropyl alcohol and -chloride have been investigated by the electron diffraction method. The atomic distances, C-O : 1.45±0.03Å, C-C : 1.54±0.02Å and valence angles,<CCC≈<CCO : 110°±2.5° are determined for the former molecule, and distances C-Cl : 1.76±0.02Å, C-C : 1.55±0.02Å and angles <CCC≈<CCCl : 109.5±1.5° for the latter. The approximate thermal vibration factors have been taken into account for the determination of the best molecular models. The rotational configurations of methyl groups have been considered, but the equilibrium position of two methyl groups cannot be determined conclusively, in spite of the fact that this effect upon the intensity curves are not to be ignored in the case of isopropyl alcohol molecule.