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The Microwave Spectrum and Structure of the CH3OHCO Dimer by F.J. Lovas; S.P. Belov; M.Y. Tretyakov; J. Ortigoso; R.D. Suenram is a Chemistry article available to read on EtoBox.

What is The Microwave Spectrum and Structure of the CH3OHCO Dimer about?

The rotational spectrum of \(\mathrm{CH}_{3} \mathrm{OH}-\mathrm{CO}\) has been observed in the region \(7-18 \mathrm{GHz}\) with a pulsed-beam Fabry-Perot cavity Fourier-transform microwave spectrometer. In order to obtain detailed structural information the spectra of \(\mathrm{CH}_{3} \mathrm{OH}, \mathrm{CH}_{3} \mathrm{OD}, \mathrm{CD}_{3} \mathrm{OH}\), and \(\mathrm{CD}_{3} \mathrm{OD}\) combined with \(\mathrm{CO}\) and \({ }^{13} \mathrm{CO}\) were examined. Each of the isotopic species studied exhibits two states, which are interpreted as \(A\) and \(E\) symmetry states arising from internal rotation of the methyl group. The \(E\)-state assignments were verified by observing their first-order Stark effect. The structure of the complex is a bent hydrogen bond of the carbon atom of \(\mathrm{CO}\) at a distance of \(2.41 \AA\) from the hydroxyl hydrogen of methanol and planar heavy atoms. The effective barrier to internal rotation for \(\mathrm{CH}_{3} \mathrm{OH}-\mathrm{CO}, V_{3}=183.0 \mathrm{~cm}^{-1}\), is one-half of the value for the methanol monomer. (c) 1994 Academic Pres. Inc.

Who reads The Microwave Spectrum and Structure of the CH3OHCO Dimer?

Author

F.J. Lovas; S.P. Belov; M.Y. Tretyakov; J. Ortigoso; R.D. Suenram

Publisher

Elsevier Science; Elsevier ; Elsevier Inc.; Elsevier BV (ISSN 0022-2852)

Published

1994

Language

EN

Field

Chemistry (Physical Sciences)