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The rotational spectrum and derived structure of 1,2,3-triazine

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Morina_JMS_rotationalspectrum_AAM.pdf (1.300Mb)
Date
01/2019
Author
Morina, Leonora
Aitken, R. Alan
Palmer, Michael H.
Christen, Dines
Keywords
1,2,3-triazine
1,2,4-triazine
Fortrat diagram
Rotational constants
Stark spectroscopy
Structure
Ab initio calculations
QD Chemistry
NDAS
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Abstract
The close similarity in patterns of bands in the microwave spectra of the isomeric 1,2,3- and 1,2,4-triazines has enabled assignment for the 1,2,3-isomer. Pure rotational transitions with J up to 65 were identified and fitted to a Watson-type Hamiltonian: A = 6334.157(14)., B = 6271.289(14), C = 3151.230(14). A and B thus show near degeneracy. Coupled cluster calculations which include both singles, doubles and selected triple excitations (CCSD(T)), give very close agreement with the spectral data. The theoretical structure which includes estimates of the 14N quadrupole coupling, not determined in the spectrum, is described.
Citation
Morina , L , Aitken , R A , Palmer , M H & Christen , D 2019 , ' The rotational spectrum and derived structure of 1,2,3-triazine ' , Journal of Molecular Spectroscopy , vol. 355 , no. 1 , pp. 87-95 . https://doi.org/10.1016/j.jms.2018.11.012
Publication
Journal of Molecular Spectroscopy
Status
Peer reviewed
DOI
https://doi.org/10.1016/j.jms.2018.11.012
ISSN
0022-2852
Type
Journal article
Rights
© 2018 Published by Elsevier Inc. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1016/j.jms.2018.11.012
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/21064

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