THE ABSORPTION-SPECTRUM OF (C2H2)-C-12 BETWEEN 12,800 AND 18,500 CM(-1) .1. VIBRATIONAL ASSIGNMENTS

The absorption spectrum of (C2H2)-C-12 has been recorded at high resol ution, between 12800 and 18 500 cm(-1), by Fourier transform spectrosc opy and intracavity laser absorption spectroscopy. The observation of 23 new vibrational levels is reported. These new data are gathered wit h all vibrational levels previously reported in the literature from ab sorption data, above 12 100 cm(-1). The resulting set of 82 levels is assigned by extrapolating the cluster model developed at lower energie s (Abbouti Temsamani, M., and Herman, M., 1995, J. chem. Phys., 102, 6 371).