The jet-cooled high-resolution far-IR spectrum of formic acid cyclic dimer

Huet, Therese R.

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https://hdl.handle.net/2142/100469 Copy

Description

Title

The jet-cooled high-resolution far-IR spectrum of formic acid cyclic dimer

Author(s)

Huet, Therese R.

Contributor(s)

• Georges, Robert
• Asselin, Pierre
• Soulard, Pascale
• Pirali, Olivier
• Goubet, Manuel
• Bteich, Sabath

Issue Date

2018-06-20

Keyword(s)

Mini-symposium: Far-Infrared Spectroscopy

Abstract

The cyclic conformation of the formic acid dimer (HCOOH)2 (FACD) is an elementary system under study to understand the concerted hydrogen transfer through equivalent hydrogen bonds. To this end, high-resolution molecular spectroscopy coupled to quantum chemical calculations is a powerful technique. So far molecular parameters have been reported for the ground state, the ν22, ν21 and ν12+ν14 vibrational levels, from spectra recorded using laser-based techniques in the 7.2 µm region a . Last year we reported the spectra associated with six rotationally resolved IR bands of FADC, recorded under jetcooled conditions with the FTIR JET-AILES apparatus at synchrotron SOLEIL, and a QCL spectrometer at MONARIS. A special attention was paid to the analysis of the far-IR ν24 fundamental band, associated with the intermolecular in-plane bending mode. Splittings due to vibration-rotation-tunneling motions were clearly observed and assigned. We will present the results of the analysis, using the model recently proposed by Zhang et al , a which is based on the inclusion of a c-type Coriolis-like coupling term to reproduce the rotation-tunneling interaction. This model was successfully used in the 7.2 µm region. The authors gratefully acknowledge the staff of the AILES beamline at synchrotron SOLEIL. The present work was funded by the French ANR Labex CaPPA through the PIA (contract ANR-11-LABX-0005-01), by the Regional Council Hauts de France, and by the European Funds for Regional Economic Development (FEDER).

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

eng

Permalink

http://hdl.handle.net/2142/100469

DOI

10.15278/isms.2018.WC07

Copyright and License Information

Copyright 2018 Therese R. Huet

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