期刊
JOURNAL OF MOLECULAR STRUCTURE
卷 795, 期 1-3, 页码 42-48出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.molstruc.2005.05.057
关键词
Coriolis coupling; FASSST spectrometer; cis-HCOOH
A broadband recording of the millimeter/submillimeter wave spectrum of formic acid heated to 170 degrees C with the FASSST spectrometer has yielded a multitude of rotational transitions of HCOOH in excited vibrational states. These include transitions of the cis-rotamer, the analysis of which is reported here. The data for the ground state could be significantly extended (546 lines), and the first information on rotational structure in vibrationally excited cis-HCOOH in the nu(9) = 1 and nu(7) = 1 states was obtained. Finally, transitions of cis-(HCOOH)-C-13 in the ground state were also observed. The rotational parameters resulting from the analysis of each of these spectra are reported, together with an initial determination of the Coriolis coupling parameters for the 7(1)/9(1)resonance interaction, an experimental force field calculation and a new structure determination. (c) 2006 Elsevier B.V. All rights reserved.
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