Abstract
Among the species of potential interstellar relevance, methyl vinyl ether (CH3OCHCH2) is the simplest ether compound containing both alkyl and alkene functional groups. In order to facilitate its detection in the ISM, we have measured the millimeter and submillimeter wave spectra from 50 to 650GHz. We present the analysis of pure rotational spectrum of the cis-methyl vinyl ether in the vibrational ground state and in the first excited states of in-plane bending mode (ν16) and methyl (ν23) and skeletal (ν24) torsional modes. Coriolis and Fermi type interactions between the v24=1 and v23=1 states have been explicitly treated using an effective two-state Hamiltonian.
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