Transition Dipole Moments for the Vibrational Fundamentals of HNC Determined from the Herman–Wallis Effect

✍ Scribed by M. Nezu; T. Amano; K. Kawaguchi

• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 180 KB
• Volume: 192
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.1998.7661

✦ Synopsis

The nu1 and nu3 fundamental bands of HNC are recorded with a Fourier transform infrared spectrometer with a resolution of 0.008 cm-1. Hydrogen isocyanide is generated in situ by dc discharge in a mixture of CH3CN ( approximately 40 mTorr), H2 ( approximately 160 mTorr), and Ar ( approximately 160 mTorr). The transition dipole moments for these fundamental bands are determined from the analysis of the Herman-Wallis effect, and they are compared with ab initio calculated values. It is found that the ab initio values for the nu1 and nu3 bands are about 50 and 30% larger, respectively. The transition dipole moments determined are to be of use for determination of the abundance of HNC in reaction systems such as the dissociative recombination reaction of HCNH+ with electrons. Copyright 1998 Academic Press.