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1.
Dr. Dominique Laniel Dr. Florian Trybel Dr. Adrien Néri Yuqing Yin Andrey Aslandukov Dr. Timofey Fedotenko Saiana Khandarkhaeva Dr. Ferenc Tasnádi Dr. Stella Chariton Dr. Carlotta Giacobbe Dr. Eleanor Lawrence Bright Dr. Michael Hanfland Dr. Vitali Prakapenka Prof. Dr. Wolfgang Schnick Prof. Dr. Igor A. Abrikosov Prof. Dr. Leonid Dubrovinsky Prof. Dr. Natalia Dubrovinskaia 《Chemistry (Weinheim an der Bergstrasse, Germany)》2022,28(62):e202201998
Non-metal nitrides are an exciting field of chemistry, featuring a significant number of compounds that can possess outstanding material properties. These properties mainly rely on maximizing the number of strong covalent bonds, with crosslinked XN6 octahedra frameworks being particularly attractive. In this study, the phosphorus–nitrogen system was studied up to 137 GPa in laser-heated diamond anvil cells, and three previously unobserved phases were synthesized and characterized by single-crystal X-ray diffraction, Raman spectroscopy measurements and density functional theory calculations. δ-P3N5 and PN2 were found to form at 72 and 134 GPa, respectively, and both feature dense 3D networks of the so far elusive PN6 units. The two compounds are ultra-incompressible, having a bulk modulus of K0=322 GPa for δ-P3N5 and 339 GPa for PN2. Upon decompression below 7 GPa, δ-P3N5 undergoes a transformation into a novel α′-P3N5 solid, stable at ambient conditions, that has a unique structure type based on PN4 tetrahedra. The formation of α′-P3N5 underlines that a phase space otherwise inaccessible can be explored through materials formed under high pressure. 相似文献
2.
Budaev S. L. Batoeva A. A. Khandarkhaeva M. S. Aseev D. G. 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2017,91(3):604-608
Russian Journal of Physical Chemistry A - Kinetic regularities of the photolysis of thiocyanate solutions using of mono- and polychromatic UV radiation sources with different spectral ranges are... 相似文献
3.
M. S. Khandarkhaeva A. A. Batoeva 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2013,87(6):1043-1047
The possibility of intensifying the catalytic destruction of phenol by galvanochemical oxidation was confirmed experimentally. The treatment time can be reduced due to the sluggish occurrence of chain radical oxidation (aftereffect). The oxidation can be performed in less acidic media in the presence of chlorides. The possibility of increasing the efficiency of oxidation by introducing H2O2 in the reaction zone in doses and reducing the undesired reactions of the oxidant was confirmed experimentally. 相似文献
4.
A. A. Batoeva M. S. Khandarkhaeva M. R. Sizykh A. A. Ryazantsev 《Russian Journal of Applied Chemistry》2010,83(1):72-75
Possibility of intensifying the galvanochemical oxidation of phenol under hydrodynamic cavitation conditions was studied. 相似文献
5.
M. S. Khandarkhaeva D. G. Aseev M. R. Sizykh A. A. Batoeva 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2016,90(11):2177-2182
General laws of the photochemical oxidation of atrazine by inorganic peroxo compounds under the impact of solar radiation are studied. It is found that almost complete conversion of atrazine can be achieved via photochemical oxidation with persulfate after 120 min, but no deep mineralization is observed. The effect an aqueous matrix has on the processes of atrazine degradation in combined oxidation systems is considered. 相似文献
6.
Maxim Bykov Stella Chariton Elena Bykova Saiana Khandarkhaeva Timofey Fedotenko Alena V. Ponomareva Johan Tidholm Ferenc Tasndi Igor A. Abrikosov Pavel Sedmak Vitali Prakapenka Michael Hanfland Hanns‐Peter Liermann Mohammad Mahmood Alexander F. Goncharov Natalia Dubrovinskaia Leonid Dubrovinsky 《Angewandte Chemie (International ed. in English)》2020,59(26):10321-10326
Polynitrides are intrinsically thermodynamically unstable at ambient conditions and require peculiar synthetic approaches. Now, a one‐step synthesis of metal–inorganic frameworks Hf4N20?N2, WN8?N2, and Os5N28?3 N2 via direct reactions between elements in a diamond anvil cell at pressures exceeding 100 GPa is reported. The porous frameworks (Hf4N20, WN8, and Os5N28) are built from transition‐metal atoms linked either by polymeric polydiazenediyl (polyacetylene‐like) nitrogen chains or through dinitrogen units. Triply bound dinitrogen molecules occupy channels of these frameworks. Owing to conjugated polydiazenediyl chains, these compounds exhibit metallic properties. The high‐pressure reaction between Hf and N2 also leads to a non‐centrosymmetric polynitride Hf2N11 that features double‐helix catena‐poly[tetraz‐1‐ene‐1,4‐diyl] nitrogen chains [?N?N?N=N?]∞. 相似文献
7.
Maxim Bykov Stella Chariton Elena Bykova Saiana Khandarkhaeva Timofey Fedotenko Alena V. Ponomareva Johan Tidholm Ferenc Tasndi Igor A. Abrikosov Pavel Sedmak Vitali Prakapenka Michael Hanfland Hanns‐Peter Liermann Mohammad Mahmood Alexander F. Goncharov Natalia Dubrovinskaia Leonid Dubrovinsky 《Angewandte Chemie (International ed. in English)》2020,59(26):10666-10666
8.
M. S. Khandarkhaeva A. A. Batoeva D. G. Aseev M. R. Sizykh 《Russian Journal of Applied Chemistry》2015,88(10):1605-1611
Kinetics of the oxidative destruction of para-chlorophenol in a combined iron-persulfate system under the action of simulated sunlight was studied. It was shown that, under additional photoirradiation, a deep conversion of chlorophenol and main intermediate products of its destruction is provided, with iron compounds serving not only as catalysts, but also as photochemical oxidation sensitizers. The degree of mineralization of para-chlorophenol and products of its oxidation under a photoactivated treatment for two hours reached a value of 60%, whereas that in the “dark” reaction did not exceed 1%. In the combined oxidizing system S2O 8 2– /Fe2+/UV-Vis, a considerable synergic effect was observed due to the formation of reactive oxygen intermediate both via decomposition persulfate and through reduction of Fe3+ from inactive Fe3+ intermediates. 相似文献
9.
A. A. Batoeva M. R. Sizykh A. A. Ryazantsev M. S. Khandarkhaeva D. G. Aseev 《Russian Journal of Applied Chemistry》2007,80(8):1365-1368
Electrochemical oxidation of chlorinated phenols was studied. 相似文献
10.
Dr. Maxim Bykov Dr. Stella Chariton Dr. Elena Bykova Saiana Khandarkhaeva Timofey Fedotenko Alena V. Ponomareva Johan Tidholm Ferenc Tasnádi Igor A. Abrikosov Pavel Sedmak Dr. Vitali Prakapenka Michael Hanfland Hanns-Peter Liermann Prof. Mohammad Mahmood Dr. Alexander F. Goncharov Natalia Dubrovinskaia Prof. Leonid Dubrovinsky 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2020,132(26):10407-10412
Polynitrides are intrinsically thermodynamically unstable at ambient conditions and require peculiar synthetic approaches. Now, a one-step synthesis of metal–inorganic frameworks Hf4N20⋅N2, WN8⋅N2, and Os5N28⋅3 N2 via direct reactions between elements in a diamond anvil cell at pressures exceeding 100 GPa is reported. The porous frameworks (Hf4N20, WN8, and Os5N28) are built from transition-metal atoms linked either by polymeric polydiazenediyl (polyacetylene-like) nitrogen chains or through dinitrogen units. Triply bound dinitrogen molecules occupy channels of these frameworks. Owing to conjugated polydiazenediyl chains, these compounds exhibit metallic properties. The high-pressure reaction between Hf and N2 also leads to a non-centrosymmetric polynitride Hf2N11 that features double-helix catena-poly[tetraz-1-ene-1,4-diyl] nitrogen chains [−N−N−N=N−]∞. 相似文献