Universität zu Köln

Asvany, Oskar, Thorwirth, Sven, Redlich, Britta and Schlemmer, Stephan ORCID: 0000-0002-1421-7281 (2018). Spectroscopy of the low-frequency vibrational modes of CH3+ isotopologues. J. Mol. Spectrosc., 347. S. 1 - 7. SAN DIEGO: ACADEMIC PRESS INC ELSEVIER SCIENCE. ISSN 1096-083X

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Abstract

The low-frequency stretching and bending vibrations of the isotopologues CH2D+,CD2H+ and CH3+ have been recorded at low temperature and low resolution. For this, a cryogenic 22-pole trapping machine coupled to an IR beamline of the FELIX free electron laser facility has been used. To record the overview spectra, the laser induced reactions CDmHn+ + H-2 -> (hv) CDm-1Hn+1+ + HD have been applied for these species. As this scheme is not applicable to CH3+, the latter has been tagged with He and subsequently dissociated by the IR beam. For the resulting CH3+-He spectrum, broad features are observed below 1000 cm(-1) possibly related to vibrational motions involving the He atom. The extracted vibrational band positions for all species are compared to results from high-level quantum-chemical calculations. (C) 2018 Elsevier Inc. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Asvany, Oskar UNSPECIFIED UNSPECIFIED UNSPECIFIED Thorwirth, Sven UNSPECIFIED UNSPECIFIED UNSPECIFIED Redlich, Britta UNSPECIFIED UNSPECIFIED UNSPECIFIED Schlemmer, Stephan UNSPECIFIED orcid.org/0000-0002-1421-7281 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-188520
DOI:	10.1016/j.jms.2018.02.006
Journal or Publication Title:	J. Mol. Spectrosc.
Volume:	347
Page Range:	S. 1 - 7
Date:	2018
Publisher:	ACADEMIC PRESS INC ELSEVIER SCIENCE
Place of Publication:	SAN DIEGO
ISSN:	1096-083X
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Physics > Institute of Physics I
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language H STRETCHING VIBRATION; AB-INITIO CALCULATIONS; 22-POLE ION-TRAP; INFRARED-SPECTROSCOPY; CARBO-IONS; METHYL CATION; BASIS-SETS; MANY-BODY; SPECTRUM; CCSD(T) Multiple languages Physics, Atomic, Molecular & Chemical; Spectroscopy Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/18852