Microwave Rotational Components of the \nu_9= 1 and \nu _{10} = 2 Vibrational Modes of ^{13}CH_{3}CCH Molecule In the Range 16 -- 50 GHz

Authors: MOHAMMAD AL-SHARE, J. A. ROBERTS

Abstract: Some rotational components have been measured in the ground, the \nu _9 = 1 and the \nu _{10} = 2 vibrational states for ^{13}CH_3CCH isotopic species in the frequency range 16--50 GHz. A set of rotational constants has been determined, which gives the best fit between the observed and the calculated frequencies, for each vibrational state. A Fermi resonance was found between these two states.

Keywords: Microwave spectra; Rotational spectra; Propyne; Interstellar clouds; Fermi resonance; Vibrational modes

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