The totally symmetric rotation‐vibrational Raman bands of benzene

The ν 1 and ν 2 Raman bands of gaseous C 6 H 6 were photographed with a resolution of 0.20–0.25 cm −1 . The J structure was resolved, but not the K structure. The analysis yielded several constants, primarily B 0 = 0.189751 ± 0.000025 cm −1 (standard error). This number differs significantly from the value obtained by Cabana et al. from the rotational structure of the ν 11 infrared band.