Molecular constants of non-bridged X

Normal coordinate analysis has been carried out for the molecules Ge2H0, Ge2D6, Si2H6, Si2D6, Si2Cl6, C2F6 and C2Cl6 on the basis of the general valence force field using Wilson’s F — G matric method. The ideal gas thermodynamic quantities of these molecules, excepting C2F6 and C2Cl0, have also been calculated for the temperature range 100-1 000 °K, at one atmospheric pressure, with rigid rotor and harmonic oscillator approximation