THE INFRARED-SPECTRUM OF (HCNO)-N-15 IN THE RANGE 170-1300-CM(-1)

The far- and mid-infrared spectra of the 15N-substituted fulminic acid, HC15NO, have been measured in the range between 170 and 1300 cm-1 at resolutions from 0.0025 to 0.0034 cm-1 with a Bruker IFS 120 HR interferometer. Spectroscopic parameters for the vibrational states v1v2v3v4v5 = 00000, 00001, 00002, 00003, 00004, 00010, 00011, and 00100 have been obtained. A Fermi resonance between the 00004 (l = 0e) and the 00100 (l = 0e) levels has been found to give rise to strong perturbations and some resonance-allowed bands. A Coriolis resonance matrix element previously neglected, between the 00002 (l = 2) and the 00010 (l = 1) levels, is shown to be significant. A general derivation of such interaction matrix elements is included. © 1993 Academic Press, Inc.