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@ARTICLE{Spahr:622533,
author = {Spahr, Dominik and Bykova, Elena and Bayarjargal,
Lkhamsuren and Milman, Victor and Liermann, Hanns-Peter and
Winkler, Björn},
title = {{S}ingle crystal diffraction study of {B}a$[{H} _4 {C} _4
{O} _{10}][{H} _3 {C} _4 {O} _{10}][{H} _2 {CO} _3 ][{HCO}
_3 ]$, a hydrous mixed sp$^2$ /sp$^3$ -carbonate},
journal = {Chemical communications},
volume = {61},
number = {1},
issn = {1359-7345},
address = {Cambridge},
publisher = {Soc.},
reportid = {PUBDB-2025-00370},
pages = {161-164},
year = {2024},
note = {DFG (projects WI1232, BA4020, FOR2125/CarboPaT and
BY101/2-1)},
abstract = {We have synthesized the first hydrous sp3-carbonate by
laser-heating Ba[CO$_3$], CO$_2$ and H$_2$O in a diamond
anvil cell at 40(3) GPa. The crystal structure of
Ba[H$_4$C$_4$O$_{10}$][H$_3$C$_4$O$_{10}$][H$_2$CO$_3$][HCO$_3$]
was determined by synchrotron single crystal X-ray
diffraction. The experiments were complemented by DFT-based
calculations. This compound is the first example of a
carbonate containing both trigonally-coordinated carbon in
[CO$_3$]$^{2−}$-groups and tetrahedrally coordinated
carbon in [CO$_4$]$^{4−}$-groups. The
[CO$_4$]$^{4−}$-groups polymerize by corner-sharing to
form pyramidal [C$_4$O$_{10}$]$^{4−}$-groups, which can
bind three or four hydrogen atoms. As the pyramidal
[C$_4$O$_{10}$]$^{4−}$-groups are a constituent of several
anhydrous sp$^3$-carbonates, we now expect that further
high-pressure hydrous carbonates can be obtained.},
cin = {DOOR ; HAS-User / FS-PETRA-D},
ddc = {540},
cid = {I:(DE-H253)HAS-User-20120731 /
I:(DE-H253)FS-PETRA-D-20210408},
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) / FS-Proposal: I-20230653
(I-20230653)},
pid = {G:(DE-HGF)POF4-631 / G:(DE-HGF)POF4-6G3 /
G:(GEPRIS)264049573 / G:(DE-H253)I-20230653},
experiment = {EXP:(DE-H253)P-P02.2-20150101},
typ = {PUB:(DE-HGF)16},
pubmed = {39625072},
UT = {WOS:001368267800001},
doi = {10.1039/D4CC04674A},
url = {https://bib-pubdb1.desy.de/record/622533},
}