High Resolution Study of the ν2 + ν10 Band of the 13C2H4 Molecule

Resumo

High resolution (0.0025 cm^–1) spectrum of the ¹³C₂H₄ molecule recorded in the 2330–2500 cm^–1 spectral region with a Bruker 120HR Fourier spectrometer is theoretically analyzed. The spectroscopic parameters of the (v₂ = v₁₀ = 1, B_2u) vibrational state of the molecule are determined for the first time by fitting the experimental data that allow the rotational energy values (529 rovibrational energies corresponding to 2400 transitions with J^max = 30 and K_a^max = 13) to be reproduced with accuracy close to experimental uncertainties.