Characterizing the multi-dimensional reaction dynamics of dihalomethanes using XUV-induced Coulomb explosion imaging-Reference-Cited by-同舟云学术

Characterizing the multi-dimensional reaction dynamics of dihalomethanes using XUV-induced Coulomb explosion imaging

Published:2023-10-12 Issue:14 Volume:159 Page:
ISSN:0021-9606
Container-title:The Journal of Chemical Physics
language:en
Short-container-title:

Author:

Walmsley T.¹^ORCID,Unwin J.¹^ORCID,Allum F.¹^ORCID,Bari S.²^ORCID,Boll R.³^ORCID,Borne K.⁴,Brouard M.¹^ORCID,Bucksbaum P.⁵,Ekanayake N.²^ORCID,Erk B.²^ORCID,Forbes R.⁵⁶^ORCID,Howard A. J.⁵,Eng-Johnsson P.⁷^ORCID,Lee J. W. L.²,Liu Z.¹,Manschwetus B.²^ORCID,Mason R.¹,Passow C.²^ORCID,Peschel J.⁷,Rivas D.³,Rolles D.⁴^ORCID,Rörig A.³^ORCID,Rouzée A.⁸^ORCID,Vallance C.¹^ORCID,Ziaee F.⁴^ORCID,Burt M.¹^ORCID

Affiliation:

1. Chemistry Research Laboratory, Department of Chemistry, University of Oxford 1 , Oxford OX1 3TA, United Kingdom

2. Deutsches Elektronen-Synchrotron DESY 2 , Notkestr. 85, 22607 Hamburg, Germany

3. European XFEL 3 , Holzkoppel 4, 22869 Schenefeld, Germany

4. J. R. Macdonald Laboratory, Department of Physics, Kansas State University 4 , Manhattan, Kansas 66506, USA

5. Stanford PULSE Institute, SLAC National Accelerator Laboratory 5 , 2575 Sand Hill Road, Menlo Park, California 94025, USA

6. Linac Coherent Light Source, SLAC National Accelerator Laboratory 6 , 2575 Sand Hill Road, Menlo Park, California 94025, USA

7. Department of Physics, Lund University 7 , 22100 Lund, Sweden

8. Max-Born-Institute 8 , Max-Born-Straße 2A, 12489 Berlin, Germany

Abstract

Site-selective probing of iodine 4d orbitals at 13.1 nm was used to characterize the photolysis of CH2I2 and CH2BrI initiated at 202.5 nm. Time-dependent fragment ion momenta were recorded using Coulomb explosion imaging mass spectrometry and used to determine the structural dynamics of the dissociating molecules. Correlations between these fragment momenta, as well as the onset times of electron transfer reactions between them, indicate that each molecule can undergo neutral three-body photolysis. For CH2I2, the structural evolution of the neutral molecule was simultaneously characterized along the C–I and I–C–I coordinates, demonstrating the sensitivity of these measurements to nuclear motion along multiple degrees of freedom.

Funder

Bundesministerium für Bildung und Forschung

Horizon 2020 Framework Programme

Engineering and Physical Sciences Research Council

U.S. Department of Energy

Publisher

AIP Publishing

Subject

Physical and Theoretical Chemistry,General Physics and Astronomy

Link

https://pubs.aip.org/aip/jcp/article-pdf/doi/10.1063/5.0172749/18166270/144302_1_5.0172749.pdf

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