THE RAMAN SPECTRUM OF METHANE- d 4
1961; NRC Research Press; Volume: 39; Issue: 3 Linguagem: Inglês
10.1139/p61-042
ISSN1208-6045
AutoresR. A. Olafson, M. A. Thomas, H. L. Welsh,
Tópico(s)Laser-Matter Interactions and Applications
ResumoThe Raman spectrum of CD 4 at 1 atm pressure was photographed with a spectral resolution of ~0.4 cm −1 , and rotational analyses of the ν 2 and ν 3 bands were carried out. The B 0 values obtained from the ν 2 and ν 3 bands are 2.6330 ± 0.0007 and 2.6328 ± 0.0007 cm −1 , respectively; the value of r 0 determined from the former is 1.09181 ± 0.00029 Å. The rotational levels of the ν = 1 state of ν 2 are split with effective B 1 values equal to 2.6894, 2.7351, and 2.7434 cm −1 . Thirteen of the fifteen branches of the ν 3 band were observed; these also show multiple B 1 values. The value obtained for ζ 3 is 0.1648. Structure was observed but not analyzed in the ν 1 , 2ν 4 , and ν 2 + ν 4 bands. On the basis of the Raman data the structures of the ν 2 and ν 3 infrared bands are discussed.
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