| Popis: |
Two weak “hot” absorption bands, ν 7 + ν 10 − ν 10 and ν 10 + ν 12 − ν 10 , of ethylene, C2H4, were analyzed for the first time with high resolution using the Fourier transform interferometer Bruker IFS-120 HR. As the result of analysis we assigned about 930 and 370 transitions (404 and 185 upper state ro-vibrational energy values) with J max . = 27 , K a max . = 14 and J max . = 20 , K a max . = 9 for the bands ν 7 + ν 10 − ν 10 and ν 10 + ν 12 − ν 10 , respectively. Strong local resonance interactions of the vibrational state ( v 10 = v 12 = 1 ) with the five other states, and of the state ( v 7 = v 10 = 1 ) with the seven other states were taken into account, and a set of 77 varied parameters, which reproduce the initial experimental data with the rms deviation of 6.1×10−4 cm−1 which is close to experimental uncertainties, was obtained. |
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