The {2 nu(3), 4 nu(2), 2 nu(2)+nu 3} and 2 nu(3)-nu(3) bands of (NO2)-N-14-O-16: Line positions and intensities

High resolution Fourier transform absorption spectra of the (NO2)-N-14-O-16 molecule recorded in the 3000-3400 cm(-1) and 1520-1600 cm(-1) spectral regions have been analyzed. In this way lines of the 2v(3), 4v(2), 2v(2) + v(3), and 2v(3) - v(3) bands of (NO2)-N-14-O-16 have been assigned with K-a values ranging from 0 to 8 and N values up to 60. The spin-rotation energy levels were very satisfactorily reproduced using a theoretical model which takes explicitly into account both the Coriolis interaction between the spin-rotation levels of the (021) vibrational state and those of (040) and of (002), and the spin-rotation resonances within (021), (040), and (002). As a consequence, precise vibrational band centers and rotational, spin-rotation, and coupling constants were obtained for the triad {(040), (002), (021)} of interacting states of (NO2)-N-14-O-16. In addition, using a large set of individual 2v(3), 4v(2), and 2v(2) + v(3) experimental line intensities at 3.2 mu m, we have determined precisely the 2v(2) + v(3) and 2v(3) transition moment constants of (NO2)-N-14-O-16. On the other hand, the transition moment constants of the 2v(3) - v(3) and 2v(2) + v(3) - 2v(2) bands were derived from those of the corresponding v(3) cold band. Finally, a comprehensive list of line positions and intensities of the interacting 4v(2), 2v(3), 2v(2) + v(3), and 2(v?3) - v(3) bands of (NO2)-N-14-O-16 has been generated at 3.2 mu m and 6.2 mu m, respectively. (C) 1996 Academic Press, Inc.