Infrared and Raman Spectra of Digermane

Abstract

Infrared spectra of gaseous digermane and of digermane‐d₆ were recorded under medium resolution from 4000–250 cm^—1 and the Raman displacements were obtained photoelectrically from 100–2600 cm^—1 for the liquid state. The 12 fundamental frequencies for each molecule were assigned to the normal modes and digermane was shown to have the D_3d ethanelike structure. The rotational structures of the e_u fundamentals of Ge₂H₆ and the ν₈ fundamental of Ge₂D₆ were resolved and analyzed. Results from the zeta sum rule confirmed the hindered rotator structure and four combination bands were used to estimate the barrier hindering internal rotation as 1490±200 cal/mole.