New high-resolution analysis of the nu(3) band of the (NO2)-N-15-O-16 isotopomer of nitrogen dioxide by Fourier transform spectroscopy

New high-resolution Fourier transform absorption spectra of an (NO2)-N-15-O -16 isotopic Sample of nitrogen dioxide were recorded at the University of Bremen in the 6.3-mum region. Starting from the results of a previous study [Y. Hamada, J. Mol. Struct. 242, 367-377 (1991)], a new and more extended analysis of the v(3) band located at 1582.1039 cm(-1) has been performed. T he spin-rotation energy levels were satisfactorily reproduced using a theor etical model which takes into account both the Coriolis interactions betwee n the spin-rotation energy levels of the (001) vibrational state with those of the (020) and (100) states and the spin-rotation resonances within each of the NO2 vibrational states. Precise vibrational energies and rotational , spin-rotation, and coupling constants were obtained in this way for the f irst triad of (NO2)-N-15-O-16 interacting states {(020), (100), (001)}. Fin ally, a comprehensive list of line positions and line intensities of the {v (1), 2v(2), v(3)} interacting bands of (NO2)-N-15-O-16 was generated, using for the line intensities the transition moment operators which were obtain ed previously for the main isotopic species. (C) 2000 Academic Press.