The microwave spectrum of propyne in the 17–52 GHz region for the V1=3 vibrational state

Abstract
The rotational spectra in the V10=3 vibrational state of propyne have been determined in the frequency range 17–52 GHz. Molecular constants for this vibrationally excited state have been determined from more than 13 observed rotational transitions. Agreement between experimentally measured frequencies and those calculated using the results of Bauer et al. was found to be good.