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| Home > Publications database > Synthesis and characterization of crystalline polymeric carbonic acid (H$_2$CO$_3$) with sp$^{3-}$hybridized carbon at elevated pressures > print |
| 001 | 637339 | ||
| 005 | 20250907054650.0 | ||
| 024 | 7 | _ | |a 10.1038/s42004-025-01614-y |2 doi |
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| 100 | 1 | _ | |a Spahr, Dominik |0 P:(DE-H253)PIP1032506 |b 0 |e Corresponding author |
| 245 | _ | _ | |a Synthesis and characterization of crystalline polymeric carbonic acid (H$_2$CO$_3$) with sp$^{3-}$hybridized carbon at elevated pressures |
| 260 | _ | _ | |a [London] |c 2025 |b Macmillan Publishers Limited, part of Springer Nature |
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| 500 | _ | _ | |a We gratefully acknowledge funding from the DFG (WI1232, BA4020, and FOR2125/CarboPaT) and the DFG Emmy-Noether Program (projects BY101/2-1 and BY112/2-1). |
| 520 | _ | _ | |a The existence of polymeric carbonic acid (H$_2$CO$_3$) at elevated pressures has been predicted, but has not been investigated experimentally. Here, polymeric carbonic acid containing sp3-hybridized carbon was synthesized and characterized at ≈40 GPa. H$_2$CO$_3$ single crystals were obtained by laser-heating a H$_2$O + CO$_2$ mixture in a diamond anvil cell. The orthorhombic crystal structure (Cmc2$_1$ with Z = 4) was refined from synchrotron single crystal X-ray diffraction data and is in agreement with a structural model predicted earlier. The crystal structure of H$_2$CO$_3$-Cmc2$_1$ is characterized by $[CO_4]^{4-}$ building blocks which are connected via corner sharing, forming chains along the c-axis. The combination of single crystal X-ray data with experimental Raman spectroscopy and DFT-calculations confirms that the structural model of H$_2$CO$_3$-Cmc2$_1$ is appropriate. The synthesis condition of polymeric carbonic acid points towards its potential existence in ice giants including the ones present in our solar system. |
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| 536 | _ | _ | |a DFG project G:(GEPRIS)264049573 - Carbonate und Schock-Kompression: Stabilität, Phasentransformation und chemische Reaktionen mit Silikaten (264049573) |0 G:(GEPRIS)264049573 |c 264049573 |x 2 |
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| 700 | 1 | _ | |a Bayarjargal, Lkhamsuren |0 P:(DE-HGF)0 |b 1 |
| 700 | 1 | _ | |a Brüning, Lukas |0 P:(DE-H253)PIP1102685 |b 2 |
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| 700 | 1 | _ | |a Wedek, Lena M. |0 P:(DE-H253)PIP1096818 |b 4 |
| 700 | 1 | _ | |a Bykov, Maxim |0 P:(DE-H253)PIP1014098 |b 5 |
| 700 | 1 | _ | |a Milman, Victor |0 0000-0003-2258-1347 |b 6 |
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| 773 | _ | _ | |a 10.1038/s42004-025-01614-y |g Vol. 8, no. 1, p. 237 |0 PERI:(DE-600)2929562-2 |n 1 |p 237 |t Communications chemistry |v 8 |y 2025 |x 2399-3669 |
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