Datum
2022-09-06Autor
Bykova, ElenaJohansson, ErikBykov, MaximChariton, StellaFei, HongzhanOvsyannikov, Sergey V.Aslandukova, AlenaGabel, StefanHolz, HendrikMerle, BenoitAlling, BjörnAbrikosov, Igor AnatolievichSmith, Jesse S.Prakapenka, Vitali B.Katsura, TomooDubrovinskaia, NataliaGoncharov, Alexander F.Dubrovinsky, LeonidMetadata
Zur Langanzeige
Aufsatz
Novel Class of Rhenium Borides Based on Hexagonal Boron Networks Interconnected by Short B₂ Dumbbells
Zusammenfassung
Transition metal borides are known due to their attractive mechanical, electronic, refractive, and other properties. A new class of rhenium borides was identified by synchrotron single-crystal X-ray diffraction experiments in laser-heated diamond anvil cells between 26 and 75 GPa. Recoverable to ambient conditions, compounds rhenium triboride (ReB₃) and rhenium tetraboride (ReB₄) consist of close-packed single layers of rhenium atoms alternating with boron networks built from puckered hexagonal layers, which link short bonded (∼1.7 Å) axially oriented B2 dumbbells. The short and incompressible Re–B and B–B bonds oriented along the hexagonal c-axis contribute to low axial compressibility comparable with the linear compressibility of diamond. Sub-millimeter samples of ReB₃ and ReB₄ were synthesized in a large-volume press at pressures as low as 33 GPa and used for material characterization. Crystals of both compounds are metallic and hard (Vickers hardness, HV = 34(3) GPa). Geometrical, crystal-chemical, and theoretical analysis considerations suggest that potential ReBₓ compounds with x > 4 can be based on the same principle of structural organization as in ReB₃ and ReB₄ and possess similar mechanical and electronic properties
Zitierform
In: Chemistry of materials Volume 34 (2022-09-06) eissn:1520-5002Zitieren
@article{doi:10.17170/kobra-202304207856,
author={Bykova, Elena and Johansson, Erik and Bykov, Maxim and Chariton, Stella and Fei, Hongzhan and Ovsyannikov, Sergey V. and Aslandukova, Alena and Gabel, Stefan and Holz, Hendrik and Merle, Benoit and Alling, Björn and Abrikosov, Igor Anatolievich and Smith, Jesse S. and Prakapenka, Vitali B. and Katsura, Tomoo and Dubrovinskaia, Natalia and Goncharov, Alexander F. and Dubrovinsky, Leonid},
title={Novel Class of Rhenium Borides Based on Hexagonal Boron Networks Interconnected by Short B₂ Dumbbells},
journal={Chemistry of materials},
year={2022}
}
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2023-04-20T13:34:32Z 2023-04-20T13:34:32Z 2022-09-06 doi:10.17170/kobra-202304207856 http://hdl.handle.net/123456789/14607 eng Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ Boron Compressibility Crystal structure Diffraction Rhenium 540 Novel Class of Rhenium Borides Based on Hexagonal Boron Networks Interconnected by Short B₂ Dumbbells Aufsatz Transition metal borides are known due to their attractive mechanical, electronic, refractive, and other properties. A new class of rhenium borides was identified by synchrotron single-crystal X-ray diffraction experiments in laser-heated diamond anvil cells between 26 and 75 GPa. Recoverable to ambient conditions, compounds rhenium triboride (ReB₃) and rhenium tetraboride (ReB₄) consist of close-packed single layers of rhenium atoms alternating with boron networks built from puckered hexagonal layers, which link short bonded (∼1.7 Å) axially oriented B2 dumbbells. The short and incompressible Re–B and B–B bonds oriented along the hexagonal c-axis contribute to low axial compressibility comparable with the linear compressibility of diamond. Sub-millimeter samples of ReB₃ and ReB₄ were synthesized in a large-volume press at pressures as low as 33 GPa and used for material characterization. Crystals of both compounds are metallic and hard (Vickers hardness, HV = 34(3) GPa). Geometrical, crystal-chemical, and theoretical analysis considerations suggest that potential ReBₓ compounds with x > 4 can be based on the same principle of structural organization as in ReB₃ and ReB₄ and possess similar mechanical and electronic properties open access Bykova, Elena Johansson, Erik Bykov, Maxim Chariton, Stella Fei, Hongzhan Ovsyannikov, Sergey V. Aslandukova, Alena Gabel, Stefan Holz, Hendrik Merle, Benoit Alling, Björn Abrikosov, Igor Anatolievich Smith, Jesse S. Prakapenka, Vitali B. Katsura, Tomoo Dubrovinskaia, Natalia Goncharov, Alexander F. Dubrovinsky, Leonid 8138−8152 doi:10.1021/acs.chemmater.2c00520 Bor Rhenium Kristallstruktur publishedVersion eissn:1520-5002 Chemistry of materials Volume 34 false
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