THE RAMAN SPECTRUM OF ETHANE-d6

The Raman spectrum of C2D6 at 1 atm pressure was photographed with a spectral resolution of ~ 0.4 cm−1. Of the six Raman-active fundamentals, v1, v2, v3, v10, and v11 were observed, and the rotational structures of v2, v3, and v10 were analyzed. The structure of v10 confirms the D3d model for the molecule and the analysis gave A0 = 1.3416 cm−1. This value, along with recent infrared values of B0 for C2H6 and C2D6, gives r0(C—H) ≡ r0(C—D) = 1.0914 ± 0.0003 Å, r0(C—C) = 1.5362 ± 0.0005 Å, and [Formula: see text].