Publication Type |
journal article |
School or College |
College of Science |
Department |
Chemistry |
Creator |
Armentrout, Peter B. |
Other Author |
Carl, Damon R.; Cooper, Theresa E.; Oomens, Jos; Steill, Jeff D. |
Title |
Infrared multiple photon dissociation spectroscopy of cationized methionine: effects of alkali-metal cation size on gas-phase conformation |
Date |
2010 |
Description |
Please note that as of 11-07-2012, access to this article through USpace had to be restricted. The gas-phase structures of alkali-metal cation complexes of the amino acid methionine (Met) as well as protonated methionine are investigated using infrared multiple photon dissociation (IRMPD) spectroscopy utilizing light generated by a free electron laser. Spectra of Li+(Met) and Na+(Met) are similar and relatively simple, whereas the spectra of K+(Met), Rb+(Met), and Cs+(Met) include distinctive new bands. Measured IRMPD spectra are compared to spectra calculated at the B3LYP/6-311+G(d,p) level of theory to identify the conformations present in the experimental studies. For Li+ and Na+ complexes, the only conformation present is a charge-solvated, tridentate structure that binds the metal cation to the amine and carbonyl groups of the amino acid backbone and the sulfur atom of the side chain, [N,CO,S]. In addition to the [N,CO,S] conformer, bands corresponding to alkali-metal cation binding to a bidentate zwitterionic structure, [CO2 -], are clearly present for the K+, Rb+, and |
Type |
Text |
Publisher |
Royal Society of Chemistry |
Volume |
12 |
Issue |
14 |
First Page |
3384 |
Last Page |
3398 |
Language |
eng |
Bibliographic Citation |
Carl, D. R., Cooper, T. E., Oomens, J., Steill, J. D., & Armentrout, P. B. (2010). Infrared multiple photon dissociation spectroscopy of cationized methionine: effects of alkali-metal cation size on gas-phase conformation. Physical Chemistry Chemical Physics, 12(14), 3384-98. |
Rights Management |
©Royal Society of Chemistry |
Format Medium |
application/pdf |
Format Extent |
2,810,456 bytes |
Identifier |
ir-main,13536 |
ARK |
ark:/87278/s6rf6chc |
Setname |
ir_uspace |
ID |
706100 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s6rf6chc |