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Title:Multiple Isomers of La(C4H6) formed in reactions of La atom with small hydrocarbons
Author(s):Cao, Wenjin
Contributor(s):Yang, Dong-Sheng; Hewage, Dilrukshi
Subject(s):Mini-symposium: Beyond the Mass-to-Charge Ratio: Spectroscopic Probes of the Structures of Ions
Abstract:\chem{La(C_4H_6)} was observed from the reactions of laser-vaporized La atom with propene (\chem{CH_2CHCH_3}),isobutene [\chem{CH_2C(CH_3)2}],1-butyne (\chem{CHCC_2H_5}), and 2-butyne (\chem{CH_3CCCH_3}) in a metal cluster beam source and investigated by mass-analyzed threshold ionization (MATI) spectroscopy in combination with quantum chemical calculations and spectral simulations. La(cyclobutene) [La(\chem{CH_2CHCHCH_2})] and La(trimethylenemethane) [\chem{LaC(CH_2)_3}] were identified from the La + propene reaction. The formation of the two isomers involves two steps: the first step is the reaction of La+ \chem{CH_2CHCH_3} with the products of \chem{La(CH_2) + C_2H_4}, and the second step is the reaction of \chem{LaCH_2 + CH_2CHCH_3} which preduces \chem{La(C_4H_6) + H_2}. For the La + isobutene reaction, La(trimethylenemethane) was formed by dehydrogenation. For the reaction of La + 1- and 2-butynes, preliminary data analysis suggested that \chem{La(C_4H_6)} was formed by simple association. All these structural isomers have similar geometries in the neutral and singly charged ion states, as evidenced by the very strong origin bands and short Franck-Condon profiles in the MATI spectra.
Issue Date:2014-06-17
Publisher:International Symposium on Molecular Spectroscopy
Citation Info:Cao, W.; Yang, D.; Hewage, D. MULTIPLE ISOMERS OF La(C4H6) FORMED IN REACTIONS OF La ATOM WITH SMALL HYDROCARBONS. Proceedings of the International Symposium on Molecular Spectroscopy, Urbana, IL, June 16-21, 2014. DOI: 10.15278/isms.2014.TG03
Rights Information:Copyright 2014 by the authors. Licensed under a Creative Commons Attribution 4.0 International License.
Date Available in IDEALS:2014-09-17

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