Infrared Transitions of HCN and HCN between 500 and 10 000 cm |
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Authors: | Arthur Maki Wolfgang Quapp Stefan Klee Georg Ch. Mellau Sieghard Albert |
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Affiliation: | a15012 24 Ave. S.E. Mill Creek, Washington, 98012-5718;bMathematisches Institut, Universität Leipzig, Augustus-Platz 10-11, D-04109, Leipzig, Germany;cPhysikalisch-Chemisches Institut, Justus-Liebig-Universität Gießen, Heinrich-Buff-Ring 58, D-35392, Gießen, Germany |
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Abstract: | We have measured the Fourier transform spectrum (FTS) of two isotopomers of hydrogen cyanide (H12C14N and H12C15N) from 500 to 10 000 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 H12C15N. The Coriolis interaction involving Δv3= −1, Δv2= 3, and Δl= ±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 10 000 cm−1with accuracies of about 0.5 cm−1or better. Values are given for the power series expansion of thel-type resonance constants and for the centrifugal distortion constants, as well as the usual vibrational and rotational constants. |
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