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@ARTICLE{Spahr:637930,
author = {Spahr, Dominik and Bykova, Elena and Bayarjargal,
Lkhamsuren and Bykov, Maxim and Brüning, Lukas and Kovalev,
Valentin and Milman, Victor and Giordano, Nico and Liermann,
Hanns-Peter and Winkler, Björn},
title = {{C}rystal {S}tructure of {C}arbonic {A}cid
({H}$_2${CO}$_3$) at {E}levated {P}ressures from
{S}ingle‐{C}rystal {D}iffraction},
journal = {Chemistry - a European journal},
volume = {31},
number = {50},
issn = {0947-6539},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {PUBDB-2025-03920},
pages = {e202501964},
year = {2025},
note = {We gratefully acknowledge funding from the DFG (WI1232,
BA4020, and FOR2125/CarboPaT). E.B. and M.B. acknowledge the
support of the DFG Emmy-Noether Program (projects BY101/2-1
and BY112/2-1) and the Johanna-Quandt-Stiftung.},
abstract = {Single crystals of carbonic acid (H$_2$CO$_3$) were
synthesized in a laser-heated diamond anvil cell at moderate
pressures between 5 and 13 GPa by reacting H$_2$O with
CO$_2$. Its monoclinic crystal structure (P2$_1$/n with Z =
4) has been obtained from synchrotron single-crystal X-ray
diffraction experiments at ≈8 GPa. The positions of the
hydrogen atoms have been determined from the experimental
data. Density functional theory-based calculations in
combination with experimental Raman spectroscopy confirmed
the structural model derived from the diffraction data. This
is the first single-crystal structure solution of water-free
carbonic acid, H$_2$CO$_3$. The structural model provided
here differs from structural models reported earlier for
lower pressures derived from neutron powder diffraction
data.},
cin = {FS-PETRA-D / DOOR ; HAS-User},
ddc = {660},
cid = {I:(DE-H253)FS-PETRA-D-20210408 /
I:(DE-H253)HAS-User-20120731},
pnm = {631 - Matter – Dynamics, Mechanisms and Control
(POF4-631) / 6G3 - PETRA III (DESY) (POF4-6G3) / DFG project
G:(GEPRIS)264049573 - Carbonate und Schock-Kompression:
Stabilität, Phasentransformation und chemische Reaktionen
mit Silikaten (264049573)},
pid = {G:(DE-HGF)POF4-631 / G:(DE-HGF)POF4-6G3 /
G:(GEPRIS)264049573},
experiment = {EXP:(DE-H253)P-P02.2-20150101},
typ = {PUB:(DE-HGF)16},
doi = {10.1002/chem.202501964},
url = {https://bib-pubdb1.desy.de/record/637930},
}