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@ARTICLE{Green:640486,
author = {Green, Alice and Chen, Keyu and BHATTACHARYYA, SURJENDU and
Allum, Felix and Usenko, Sergey and Ashfold, Michael N. R.
and Baumann, Thomas M. and Borne, Kurtis and Brouard, Mark
and Burt, Michael and Curchod, Basile and Erk, Benjamin and
Forbes, Ruaridh and Ibele, Lea-Maria and Ingle, Rebecca and
Van Sa Lam, Huynh and Li, Xiang and Lin, Kang and Mazza,
Tommaso and McManus, Joseph and Meyer, Michael and Mullins,
Terence and Figueira Nunes, Joao Pedro and Rivas, Daniel E.
and Roerig, Aljoscha and Rouzée, Arnaud and Schmidt,
Philipp and Searles, John and Senfftleben, Björn and
Stapelfeldt, Henrik and Tanyag, Rico Mayro P. and Trinter,
Florian and Venkatachalam, Anbu and Wang, Enliang and Warne,
Emily M. and Weber, Peter M. and Wolf, Thomas and Jahnke,
Till and Rudenko, Artem and Boll, Rebecca and Rolles,
Daniel},
title = {{V}isualizing the {T}hree-{D}imensional {A}rrangement of
{H}ydrogen {A}toms in {O}rganic {M}olecules by {C}oulomb
{E}xplosion {I}maging},
journal = {Journal of the American Chemical Society},
volume = {147},
number = {41},
issn = {0002-7863},
address = {Washington, DC},
publisher = {ACS Publications},
reportid = {PUBDB-2025-04808},
pages = {37133 - 37143},
year = {2025},
note = {Waiting for fulltext},
abstract = {Structure-sensitive methods based on femtosecond light or
electron pulses are now making it possible to measure how
molecular structures change during light-induced processes.
Despite significant progress, high-fidelity imaging of
nuclear positions remains a challenge even for relatively
small molecular systems and, notably, regarding the
positions of hydrogen atoms. As demonstrated in recent work,
X-ray-induced Coulomb explosion imaging (CEI) may overcome
this obstacle, as its sensitivity does not depend on the
mass of the imaged atoms. The photoinduced ring opening of
the heterocyclic molecule 2(5H)-thiophenone has attracted
recent interest. Here, we show that CEI offers a powerful
route to imaging the peripheral H atoms in this molecule and
thus, more generally, to tracking detailed nuclear motions
(e.g., isomerizations) in organic molecules on ultrafast
time scales. Specifically, we record momentum-space Coulomb
explosion images that report on the three-dimensional
positioning of all nuclei within the molecule, for instance,
distinguishing H atoms in C–H bonds that lie within or are
directed out of the plane defined by the heavy atoms. The
prospect of imaging peripheral H atoms to probe
photochemical dynamics is explored by coupling ab initio
molecular dynamics with classical Coulomb explosion
simulations, thereby differentiating potential photoproduct
isomers, including those whose structures primarily differ
in the position of the hydrogens.},
cin = {FS-FLASH-O / FS-PETRA-S / XFEL-User / $XFEL_E2_SQS$ /
CFEL-ATTO},
ddc = {540},
cid = {I:(DE-H253)FS-FLASH-O-20160930 /
I:(DE-H253)FS-PETRA-S-20210408 /
I:(DE-H253)XFEL-User-20170713 /
$I:(DE-H253)XFEL_E2_SQS-20210408$ /
I:(DE-H253)CFEL-ATTO-20180413},
pnm = {631 - Matter – Dynamics, Mechanisms and Control
(POF4-631) / DFG project G:(GEPRIS)509471550 - Dynamik
photoionisations-induzierter Prozesse in laser-präparierten
Molekülen in der Gasphase und der wässrigen Phase
(509471550) / SINDAM - Sunlight-Induced Nonadiabatic
Dynamics of Atmospheric Molecules (803718)},
pid = {G:(DE-HGF)POF4-631 / G:(GEPRIS)509471550 /
G:(EU-Grant)803718},
experiment = {EXP:(DE-H253)XFEL-SQS-20150101},
typ = {PUB:(DE-HGF)16},
doi = {10.1021/jacs.5c08730},
url = {https://bib-pubdb1.desy.de/record/640486},
}