The stretching–bending bands of ¹³C₂HD

Abstract

The infrared spectrum of ¹³C₂HD has been investigated using high-resolution Fourier transform infrared spectroscopy. A large number of ro-vibrational transitions in the spectral region 1000–6600 cm⁻¹ have been recorded and assigned. This paper is focused only on the vibrational bands involving pure stretching, stretching–bending or stretching–stretching modes. In total, 78 bands have been identified and assigned, 29 related to υ₁(CH stretch), 27 to υ₂(CC stretch), and 22 to υ₃(CD stretch). The data pertaining to each stretching mode have been fitted simultaneously in order to obtain accurate sets of rotational and vibrational parameters for the excited states.

Acknowledgements

The authors acknowledge the Università di Bologna and the Ministero della Ricerca e dell’Università, PRIN ‘Trasferimento di energia e di carica: dalle collisioni ai processi dissipativi’, for financial support. The authors also thank Prof. G. Di Lonardo for helping during the recording and the analysis of the spectra.