The {nu(1)+2 nu(2), nu(1)+nu(3)} bands of (NO2)-N-14-O-16: Line positions and intensities; Line intensities in the nu(1)+nu(2)+nu(3)-nu(2) hot band

High resolution Fourier transform absorption spectra of the (NO2)-N-14-O-16 molecule recorded in the 2630-3510 cm(-1) spectral region have been analysed and lines of the nu(1) + nu(3) band of this molecule have been assigned for K-a values ranging from 0 to 10 and N values up to 55. 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 (101) vibrational state and those of (120) and the spin-rotation resonances within (101) and (120). As a consequence, precise vibrational band centers and rotational, spin-rotation, and coupling constants were obtained for the {(120), (101)} interacting states of (NO2)-N-14-O-16. In addition, using a large set of individual nu(1) + nu(3) experimental line intensities we have determined precisely the nu(1) + nu(2) transition moment constants. Also from nu(1) + nu(2) + nu(3) - nu(2) line intensities measured in this work, the transition moment operator of the nu(1) + nu(2) + nu(3) - nu(2) hot band was found to be in agreement with the transition dipole moment of the corresponding cold band, namely, nu(1) + nu(3). Finally, a comprehensive list of line positions and intensities of the nu(1) + nu(3) band of (NO2)-N-14-O-16 has been generated at 3.4 mu m. (C) 1997 Academic Press.