Microwave spectra of molecules of astrophysical interest.: XXVI.: Acetic acid (CH3COOH)

The microwave spectrum of acetic acid is critically reviewed and supplemented with spectral frequency calculations derived from the rotation-torsion analysis. A simultaneous analysis of the torsional ground state, nu(t)=0, and first and second torsionally excited states, nu(t)=1 and 2, was carried out using the so-called "rho axis method." The primary objective of this review is to provide radio astronomers with complete spectral coverage over the 1-400 GHz range for the ground and nu(t)=1 states, covering rotational quantum numbers J <= 30 and parallel to K-a parallel to <= 15. (c) 2008 by the U. S. Secretary of Commerce on behalf of the United States. All rights reserved.