The FT-IR Spectrum of H13C15NO in the ranges 1800-3600 and 6300-7000 cm-1

The midinfrared spectrum of (HCNO)-C-13-N-15, an isotopically substituted species of fulminic acid, has been analyzed in the ranges 1800-3600 and 6300-7000 cm(-1). More than 9000 infrared lines have been assigned, which makes it possible to identify more than 80 new vibrational levels. Power series constants of these levels are given. Each vibrational level with its rotational levels is globally or locally perturbed. Most of the interactions are part of resonance systems. Three resonance Systems of (HCNO)-C-13-N-15 (00105101011, 10003 and 10011) are presented, as well as a comparison with the corresponding resonance systems of HCNO and (HCNO)-C-13. In addition, an analysis of the 2nu(1) band system and a comparison of the basic Coriolis-type resonances nu(1)nu(2)nu(3)02/nu(1)nu(2)nu(3)10 and Fermi-type resonances nu(1)nu(2)nu(3)nu(4)0/nu(1)nu(2)(nu(3) - 1)nu(4)4 are discussed for the three isotopomers HCNO, (HCNO)-C-13 and (HCNO)-C-13-N-15. (C) 2001 Elsevier Science B.V. All rights reserved.