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Wenthold PG, Koirala D, Somogyi A, Poutsma JC. Infrared spectroscopic confirmation of α-lactone formation in the dissociation of a gaseous amino acid. J PHYS ORG CHEM 2016. [DOI: 10.1002/poc.3606] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Paul G. Wenthold
- Department of Chemistry; Purdue University; 560 Oval Drive West Lafayette IN 47907 USA
| | - Damodar Koirala
- Department of Chemistry; Purdue University; 560 Oval Drive West Lafayette IN 47907 USA
| | - Arpad Somogyi
- Campus Chemical Instrumentation Center, Mass Spectrometry and Proteomics Laboratory; The Ohio State University; 460 West 12th Ave Columbus OH 43210 USA
| | - J. C. Poutsma
- The College of William and Mary; Williamsburg VA 23187 USA
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da Silva G. Decomposition of Pyruvic Acid on the Ground-State Potential Energy Surface. J Phys Chem A 2015; 120:276-83. [DOI: 10.1021/acs.jpca.5b10078] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gabriel da Silva
- Department
of Chemical and
Biomolecular Engineering, The University of Melbourne, Melbourne, Victoria 3010, Australia
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Koirala D, Kodithuwakkuge SR, Wenthold PG. Mass spectrometric study of the decomposition pathways of canonical amino acids and α-lactones in the gas phase. J PHYS ORG CHEM 2015. [DOI: 10.1002/poc.3464] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Damodar Koirala
- Department of Chemistry; Purdue University; 560 Oval Drive West Lafayette IN 47906 USA
| | | | - Paul G. Wenthold
- Department of Chemistry; Purdue University; 560 Oval Drive West Lafayette IN 47906 USA
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Miyagawa M, Akai N, Nakata M. UV-induced photoreaction pathways of salicylic acid: Identification of the fourth stable conformer and ketoketene–water complex. Chem Phys Lett 2014. [DOI: 10.1016/j.cplett.2014.04.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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5
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Miyagawa M, Akai N, Nakata M. UV-light induced conformational changes of 3-chlorosalicylic acid in low-temperature argon matrices. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2013.11.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Bazsó G, Góbi S, Tarczay G. Near-Infrared Radiation Induced Conformational Change and Hydrogen Atom Tunneling of 2-Chloropropionic Acid in Low-Temperature Ar Matrix. J Phys Chem A 2012; 116:4823-32. [DOI: 10.1021/jp212597y] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gábor Bazsó
- Laboratory of Molecular
Spectroscopy, Institute of
Chemistry, Eötvös University, PO Box 32, H-1518, Budapest 112, Hungary
| | - Sándor Góbi
- Laboratory of Molecular
Spectroscopy, Institute of
Chemistry, Eötvös University, PO Box 32, H-1518, Budapest 112, Hungary
| | - György Tarczay
- Laboratory of Molecular
Spectroscopy, Institute of
Chemistry, Eötvös University, PO Box 32, H-1518, Budapest 112, Hungary
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Nanbu S, Sekine M, Nakata M. Hydrogen-atom tunneling in isomerization around the C-O bond of 2-chloro-6-fluorophenol in low-temperature argon matrixes. J Phys Chem A 2011; 115:9911-8. [PMID: 21793595 DOI: 10.1021/jp2048585] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Infrared spectra of 2-chloro-6-fluorophenol in argon matrixes at 20 K revealed the presence of a "Cl-type" isomer, which has the OH···Cl hydrogen bond, but no "F-type" isomer with OH···F bonding, in striking contrast to the existence of both isomers in the gas and liquid phases at room temperature. This finding suggests that the F-type isomer changes to the more stable Cl-type one by hydrogen-atom tunneling in the matrixes. Similar experiments on the OD···X analog species were performed to confirm the tunneling isomerization, resulting in an O-D stretching band of the F-type isomer appearing as well as that of the Cl type, like the spectra reported in the gas and liquid phases. This implies that tunneling migration of the D atom is inhibited in the argon matrix. In addition, UV-induced photoreactions of 2-chloro-6-fluorophenol were studied by a joint use of matrix-isolation IR spectroscopy assisted by density functional theory calculations. It was found that 2-fluorocyclopentadienylidenemethanone and 4-chloro-2-fluorocyclohexadienone were produced from the Cl type; the former was by the Wolff rearrangement after dissociation of the H atom in the OH group and the Cl atom, and the latter was by intramolecular migration of the H and Cl atoms. As for the deuterated F-type isomer, however, 2-chlorocyclopentadienylidenemethanone was produced by the Wolff rearrangement after dissociation of the D atom in the OD group and the F atom, besides other photoproducts of the deuterated Cl-type isomer. It is thus concluded that the tunneling isomerization around the C-O bond occurs in the OH···X species but not in the OD···X species.
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Affiliation(s)
- Shota Nanbu
- Graduate School of BASE (Bio-Applications and Systems Engineering), Tokyo University of Agriculture and Technology, Naka-cho, Koganei, Tokyo 184-8588, Japan
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Sekine M, Nagai Y, Sekiya H, Nakata M. Photoinduced Hydrogen-Atom Eliminations of 6-Hydroxyquinoline and 7-Hydroxyquinoline Studied by Low-Temperature Matrix-Isolation Infrared Spectroscopy and Density-Functional-Theory Calculations. J Phys Chem A 2009; 113:8286-98. [DOI: 10.1021/jp903146v] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Masahiko Sekine
- Graduate School of BASE (Bio-Applications and Systems Engineering), Tokyo University of Agriculture and Technology, Naka-cho, Koganei, Tokyo 184-8588, Japan, and Department of Chemistry, Faculty of Sciences, Graduate School of Molecular Chemistry, Kyushu University, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Yuko Nagai
- Graduate School of BASE (Bio-Applications and Systems Engineering), Tokyo University of Agriculture and Technology, Naka-cho, Koganei, Tokyo 184-8588, Japan, and Department of Chemistry, Faculty of Sciences, Graduate School of Molecular Chemistry, Kyushu University, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Hiroshi Sekiya
- Graduate School of BASE (Bio-Applications and Systems Engineering), Tokyo University of Agriculture and Technology, Naka-cho, Koganei, Tokyo 184-8588, Japan, and Department of Chemistry, Faculty of Sciences, Graduate School of Molecular Chemistry, Kyushu University, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Munetaka Nakata
- Graduate School of BASE (Bio-Applications and Systems Engineering), Tokyo University of Agriculture and Technology, Naka-cho, Koganei, Tokyo 184-8588, Japan, and Department of Chemistry, Faculty of Sciences, Graduate School of Molecular Chemistry, Kyushu University, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
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