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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Milman, Victor
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2024Trigonal Planar [PN3]4– Anion in the Nitridophosphate Oxide Ba3[PN3]Ocitations
- 2024Synthesis and Comprehensive Studies of Be‐IV‐N2 (IV=Si, Ge): Solving the Mystery of Wurtzite‐Type Pmc21 Structurescitations
- 2024Synthesis and crystal structure of acentric anhydrous beryllium carbonate Be(CO3)citations
- 2024Trigonal Planar [PN3]4− Anion in the Nitridophosphate Oxide Ba3[PN3]Ocitations
- 2023Elasticity of Dense Metal–Organic Framework Compoundscitations
- 2022Synthesis of Ultra-Incompressible Carbon Nitrides Featuring Three-Dimensional Frameworks of CN4 Tetrahedra Recoverable at Ambient Conditions
- 2022High-pressure synthesis of seven lanthanum hydrides with a significant variability of hydrogen contentcitations
- 2021Nitrosonium nitrate (NO+NO3−) structure solution using in situ single-crystal X-ray diffraction in a diamond anvil cellcitations
- 2021Nitrosonium nitrate (NO+NO3-) structure solution using in situ single-crystal X-ray diffraction in a diamond anvil cellcitations
- 2021Nitrosonium nitrate (NO$^+$NO$_3$$^{−}$) structure solution using in situ single-crystal X-ray diffraction in a diamond anvil cellcitations
- 2021Structural, Physical, and Thermodynamic Properties of Aragonitic Ca$_x$Sr$_{1–x}$ CO$_3$ Solid Solutionscitations
- 2020Novel sulfur hydrides synthesized at extreme conditionscitations
- 2020High-Pressure Polymeric Nitrogen Allotrope with the Black Phosphorus Structurecitations
- 2020Phase stabilities of MgCO$_{3}$ and MgCO$_{3}$-II studied by Raman spectroscopy, x-ray diffraction, and density functional theory calculationscitations
- 2019A new BaCa(CO3)2 polymorphcitations
- 2014Compression Behavior of $Sm_{2}Ti_{2}O_{7}$-Pyrochlore up to 50 GPa: Single-Crystal X-ray Diffraction and Density Functional Theory Calculationscitations
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article
Synthesis of Ultra-Incompressible Carbon Nitrides Featuring Three-Dimensional Frameworks of CN4 Tetrahedra Recoverable at Ambient Conditions
Abstract
More than thirty years ago, carbon nitrides featuring 3D frameworks of tetrahedral CN4 units were identified as one of the great aspirations of materials science, expected to have a hardness greater than or comparable to diamond. Since then, no unambiguous experimental evidence of their existence has been delivered. Here, we report the high-pressure high-temperature synthesis of the long-sought-after covalent carbon nitrides, tI14-C3N4, hP126-C3N4, and tI24-CN2, in laser-heated diamond anvil cells. Their structures were solved and refined using synchrotron single-crystal X-ray diffraction. In these solids, carbon atoms, all sp3-hybridized, and nitrogen atoms are fully saturated, forming four and three covalent bonds, respectively, leading to three-dimensional arrangements of corner-sharing CN4 tetrahedra. These carbon nitrides are ultra-incompressible, with hP126-C3N4 and tI24-CN2 even rivalling diamond's incompressibility, and superhard. These novel compounds are recoverable to ambient conditions in crystalline form and chemically stable in air. Being wide-band gap semiconductors with intriguing features in their electronic structure, they are expected to exhibit multiple exceptional functionalities besides their mechanical properties, opening new perspectives for materials science.