Tabletop imaging of structural evolutions in chemical reactions demonstrated for the acetylene cation

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DOIResolve DOI: http://doi.org/10.1038/ncomms5422
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TypeArticle
Journal titleNature Communications
ISSN2041-1723
Volume5
Article number4422
Subjectacetylene; cation; proton; acetylene; cation; chemical reaction; molecular analysis; ab initio calculation; absorption; chemical reaction; density functional theory; electric field; electron; imaging; ionization; isomerization; laser; molecule; photon; ultraviolet radiation; vacuum
AbstractThe introduction of femto-chemistry has made it a primary goal to follow the nuclear and electronic evolution of a molecule in time and space as it undergoes a chemical reaction. Using Coulomb Explosion Imaging, we have shot the first high-resolution molecular movie of a to and fro isomerization process in the acetylene cation. So far, this kind of phenomenon could only be observed using vacuum ultraviolet light from a free-electron laser. Here we show that 266 ‰nm ultrashort laser pulses are capable of initiating rich dynamics through multiphoton ionization. With our generally applicable tabletop approach that can be used for other small organic molecules, we have investigated two basic chemical reactions simultaneously: proton migration and C=C bond breaking, triggered by multiphoton ionization. The experimental results are in excellent agreement with the timescales and relaxation pathways predicted by new and quantitative ab initio trajectory simulations.
Publication date
PublisherMacmillan Publishers
LanguageEnglish
AffiliationNational Research Council Canada; Security and Disruptive Technologies
Peer reviewedYes
NPARC number21275575
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Record identifier9933dbdc-6220-4c17-b762-b5892a962e94
Record created2015-07-14
Record modified2016-05-09
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