Infrared multiple photon dissociation spectrum of protonated bis(2-methoxyethyl) ether obtained with a tunable CO2 laser

Autor:	Wright L. Pearson, John R. Eyler, N. A. Horenstein, Y. Bozai, Mohammad Ehsan
Rok vydání:	2015
Předmět:	chemistry.chemical_compound Photon Infrared Chemistry Free-electron laser General Physics and Astronomy Diglyme Infrared multiphoton dissociation Physical and Theoretical Chemistry Atomic physics Dissociation (chemistry) Spectral line Action spectrum
Zdroj:	Physical Chemistry Chemical Physics. 17:25877-25881
ISSN:	1463-9084 1463-9076
DOI:	10.1039/c5cp01752a
Popis:	A moderate-resolution infrared multiple photon dissociation (IRMPD) spectrum of protonated bis(2-methoxyethyl) ether (diglyme) was obtained using a grating-tuned CO2 laser. The experimental spectrum compares well with one calculated theoretically at the MP2 level and exhibits defined peaks over the span of the CO2 laser output lines as opposed to a relatively featureless spectrum over this wavelength range obtained using free electron laser infrared radiation. The lowest energy structure corresponding to the calculated vibrational spectrum is consistent with structures previously calculated at the same level of theory. Alternative structures were calculated at lower levels of theory for comparison and investigation of the energetics of proton-heteroatom interactions. Broadening of the IRMPD action spectrum due to energetic phenomena characteristic of proton bridges was not observed and thus did not obscure the correlation between theoretical calculations and experimentally determined spectra as it may have in previous studies.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ea554297c2137ca6bfd3ca81ff7e29f4 https://doi.org/10.1039/c5cp01752a Zobrazit plný text záznamu