Analysis of high resolution FTIR spectra from synchrotron sources using evolutionary algorithms

Simple item page
dc.contributor.authorvan Wijngaarden, Jennifer
dc.contributor.authorDesmond, Durell
dc.contributor.authorLeo Meerts, W.
dc.date.accessioned2021-10-25T23:13:48Z
dc.date.available2021-10-25T23:13:48Z
dc.date.issued2015-04-17
dc.date.submitted2021-10-25T20:58:11Zen_US
dc.description.abstractRoom temperature Fourier transform infrared spectra of the four-membered heterocycle trimethylene sulfide were collected with a resolution of 0.00096cm−1 using synchrotron radiation from the Canadian Light Source from 500 to 560cm−1. The in-plane ring deformation mode (ν13) at ∼529cm−1 exhibits dense rotational structure due to the presence of ring inversion tunneling and leads to a doubling of all transitions. Preliminary analysis of the experimental spectrum was pursued via traditional methods involving assignment of quantum numbers to individual transitions in order to conduct least squares fitting to determine the spectroscopic parameters. Following this approach, the assignment of 2358 transitions led to the experimental determination of an effective Hamiltonian. This model describes transitions in the P and R branches to J′=60 and Ka′=10 that connect the tunneling split ground and vibrationally excited states of the ν13 band although a small number of low intensity features remained unassigned. The use of evolutionary algorithms (EA) for automated assignment was explored in tandem and yielded a set of spectroscopic constants that re-create this complex experimental spectrum to a similar degree. The EA routine was also applied to the previously well-understood ring puckering vibration of another four-membered ring, azetidine (Zaporozan et al., 2010). This test provided further evidence of the robust nature of the EA method when applied to spectra for which the underlying physics is well understood.en_US
dc.description.sponsorshipNSERC RGPIN/0653-2016en_US
dc.identifier.citationvan Wijngaarden, J.; Desmond, D.; Leo Meerts, W. Analysis of high resolution FTIR spectra from synchrotron sources using evolutionary algorithms. J. Mol. Spectrosc. 2015, 315, 107-113.en_US
dc.identifier.doi10.1016/j.jms.2015.04.002
dc.identifier.urihttp://hdl.handle.net/1993/36074
dc.language.isoengen_US
dc.publisherJournal of Molecular Spectroscopyen_US
dc.rightsopen accessen_US
dc.subjectrovibrational spectroscopyen_US
dc.subjectEvolutionary algorithmsen_US
dc.subjectGenetic algorithmsen_US
dc.subjectSynchrotronen_US
dc.subjectInfrareden_US
dc.subjectAzetidineen_US
dc.subjecttrimethylene sulfideen_US
dc.titleAnalysis of high resolution FTIR spectra from synchrotron sources using evolutionary algorithmsen_US
dc.typePreprinten_US
local.author.affiliationFaculty of Scienceen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
EA-JMS-2015-Sept.pdf
Size:
1.23 MB
Format:
Adobe Portable Document Format
Description:
Main article
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
2.24 KB
Format:
Item-specific license agreed to upon submission
Description:
Download
Collections
University of Manitoba Scholarship
Faculty of Science Scholarly Works