Measurement and analysis of the ν2 and ν4 infrared bands of CD4

Abstract
The infrared spectrum of CD4 has been recorded between 942 and 1201 cm−1, encompassing the ν2 and ν4 bands. The data have been analysed taking account of the Bζ24 Coriolis coupling term linking the upper states of the two bands. Six hundred seventy-five assigned transitions, reaching a maximum upper state J value of 20 in each band, have been fitted with a standard deviation of 0.013 cm−1 and new values of the molecular constants are reported.

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