Journal of Molecular Spectroscopy 
           -- Dec. 1996 -- vol.180, no.2, pp. 323-36

Infrared transitions of H^12/C^14/N and H^12/C^15/N between
500 and 10000 cm^-1

Maki, A.; Quapp, W.; Klee, S.; Mellau, G.C.; Albert, S.
          Inst. of Math., Leipzig Univ., Germany

We have measured the Fourier transform spectrum (FTS) of two isotopomers of
hydrogen cyanide (H^12/C^15/N and H^12/C^15/N) from 500 to
10000 cm^-1/. The infrared data have been combined with earlier
published microwave and submillimeter-wave measurements. From this analysis
new vibration-rotation energy levels and constants are given, based on the
observation of a number of new vibrational levels, especially for 
H^12/C^15/N. The Coriolis interaction involving Delta nu_3=-1, Delta
nu_2=3, and Delta l=+or-1 has been observed for a great many levels
and in some cases the assignments of laser transitions allowed by this
interaction are more clearly shown. New vibration-rotation constants are
given that allow one to predict the transition wavenumbers for most of the
transitions below 10000 cm^-1/ with accuracies of about 0.5 cm^-1/
or better. Values are given for the power series expansion of the l-type
resonance constants and for the centrifugal distortion constants, as well as
the usual vibrational and rotational constants

Doc. Type Journal Paper ; Experimental
Publisher Academic Press  Coden JMOSA3 ISSN 0022-2852

Classification codes A3320E; A3320B; A3520P

Indexing 
carbon compounds; Fourier transform spectra; hydrogen compounds; 
infrared spectra; isomerism; isotope effects; microwave spectra;
rotational-vibrational states; submillimetre wave spectra;
infrared transitions; H^12/C^14/N; H^12/C^15/N; HCN; 
Fourier transform spectrum; isotopomers; infrared data;
microwave measurements; submillimeter-wave measurements; 
vibration-rotation energy levels; vibrational levels; 
Coriolis interaction; laser transitions;
power series expansion; l-type resonance constants; 
centrifugal distortion constants; vibrational constants; 
rotational constants; 500 to 10000 cm^-1