The ν1and ν2Bands of FNO2

摘要: Abstract High-resolution infrared spectra of the stronga-type absorptions corresponding to ν1(ν0∼ 1310.75 cm−1) and ν2(ν0= 821.9387 bands FNO2have been analyzed. The ν1line positions exhibited extensive perturbations as a result three nearly degenerate vibrational states—ν1, ν3+ ν6, ν5+ ν6—which interact through strong Coriolis coupling. weak interaction between ν2and ν6reported by Tanaka Morino (1969,J. Mol. Spectrosc.32,436–448) manifested itself changes in theb-axis constants theν2= 1 state; nevertheless, over 1400 ν2transitions were fit with an rms error 0.00066 cm−1using standardA-reduced Hamiltonian. Line positions, assignments, relative intensities for dominant transitions both have established, although comprehensive analysis requires detailed understanding lower frequency states.