Shape-adaptive single-molecule magnetism and hysteresis up to 14 K in oxide clusterfullerenes Dy(2)O@C(72) and Dy(2)O@C(74) with fused pentagon pairs and flexible Dy–(μ(2)-O)–Dy angle

Dysprosium oxide clusterfullerenes Dy(2)O@C(s)(10528)–C(72) and Dy(2)O@C(2)(13333)–C(74) are synthesized and characterized by single-crystal X-ray diffraction. Carbon cages of both molecules feature two adjacent pentagon pairs. These pentalene units determine positions of endohedral Dy ions hence th...

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Autores principales: Velkos, Georgios, Yang, Wei, Yao, Yang-Rong, Sudarkova, Svetlana M., Liu, XinYe, Büchner, Bernd, Avdoshenko, Stanislav M., Chen, Ning, Popov, Alexey A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Royal Society of Chemistry 2020
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7116574/
https://www.ncbi.nlm.nih.gov/pubmed/33437409
http://dx.doi.org/10.1039/d0sc00624f
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author Velkos, Georgios
Yang, Wei
Yao, Yang-Rong
Sudarkova, Svetlana M.
Liu, XinYe
Büchner, Bernd
Avdoshenko, Stanislav M.
Chen, Ning
Popov, Alexey A.
author_facet Velkos, Georgios
Yang, Wei
Yao, Yang-Rong
Sudarkova, Svetlana M.
Liu, XinYe
Büchner, Bernd
Avdoshenko, Stanislav M.
Chen, Ning
Popov, Alexey A.
author_sort Velkos, Georgios
collection PubMed
description Dysprosium oxide clusterfullerenes Dy(2)O@C(s)(10528)–C(72) and Dy(2)O@C(2)(13333)–C(74) are synthesized and characterized by single-crystal X-ray diffraction. Carbon cages of both molecules feature two adjacent pentagon pairs. These pentalene units determine positions of endohedral Dy ions hence the shape of the Dy(2)O cluster, which is bent in Dy(2)O@C(72) but linear in Dy(2)O@C(74). Both compounds show slow relaxation of magnetization and magnetic hysteresis. Nearly complete cancelation of ferromagnetic dipolar and antiferromagnetic exchange Dy···Dy interactions leads to unusual magnetic properties. Dy(2)O@C(74) exhibits zero-field quantum tunneling of magnetization and magnetic hysteresis up to 14 K, the highest temperature among Dy-clusterfullerenes.
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spelling pubmed-71165742021-01-11 Shape-adaptive single-molecule magnetism and hysteresis up to 14 K in oxide clusterfullerenes Dy(2)O@C(72) and Dy(2)O@C(74) with fused pentagon pairs and flexible Dy–(μ(2)-O)–Dy angle Velkos, Georgios Yang, Wei Yao, Yang-Rong Sudarkova, Svetlana M. Liu, XinYe Büchner, Bernd Avdoshenko, Stanislav M. Chen, Ning Popov, Alexey A. Chem Sci Chemistry Dysprosium oxide clusterfullerenes Dy(2)O@C(s)(10528)–C(72) and Dy(2)O@C(2)(13333)–C(74) are synthesized and characterized by single-crystal X-ray diffraction. Carbon cages of both molecules feature two adjacent pentagon pairs. These pentalene units determine positions of endohedral Dy ions hence the shape of the Dy(2)O cluster, which is bent in Dy(2)O@C(72) but linear in Dy(2)O@C(74). Both compounds show slow relaxation of magnetization and magnetic hysteresis. Nearly complete cancelation of ferromagnetic dipolar and antiferromagnetic exchange Dy···Dy interactions leads to unusual magnetic properties. Dy(2)O@C(74) exhibits zero-field quantum tunneling of magnetization and magnetic hysteresis up to 14 K, the highest temperature among Dy-clusterfullerenes. Royal Society of Chemistry 2020-04-20 /pmc/articles/PMC7116574/ /pubmed/33437409 http://dx.doi.org/10.1039/d0sc00624f Text en This journal is © The Royal Society of Chemistry 2020 http://creativecommons.org/licenses/by/3.0/ This article is freely available. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence (CC BY 3.0)
spellingShingle Chemistry
Velkos, Georgios
Yang, Wei
Yao, Yang-Rong
Sudarkova, Svetlana M.
Liu, XinYe
Büchner, Bernd
Avdoshenko, Stanislav M.
Chen, Ning
Popov, Alexey A.
Shape-adaptive single-molecule magnetism and hysteresis up to 14 K in oxide clusterfullerenes Dy(2)O@C(72) and Dy(2)O@C(74) with fused pentagon pairs and flexible Dy–(μ(2)-O)–Dy angle
title Shape-adaptive single-molecule magnetism and hysteresis up to 14 K in oxide clusterfullerenes Dy(2)O@C(72) and Dy(2)O@C(74) with fused pentagon pairs and flexible Dy–(μ(2)-O)–Dy angle
title_full Shape-adaptive single-molecule magnetism and hysteresis up to 14 K in oxide clusterfullerenes Dy(2)O@C(72) and Dy(2)O@C(74) with fused pentagon pairs and flexible Dy–(μ(2)-O)–Dy angle
title_fullStr Shape-adaptive single-molecule magnetism and hysteresis up to 14 K in oxide clusterfullerenes Dy(2)O@C(72) and Dy(2)O@C(74) with fused pentagon pairs and flexible Dy–(μ(2)-O)–Dy angle
title_full_unstemmed Shape-adaptive single-molecule magnetism and hysteresis up to 14 K in oxide clusterfullerenes Dy(2)O@C(72) and Dy(2)O@C(74) with fused pentagon pairs and flexible Dy–(μ(2)-O)–Dy angle
title_short Shape-adaptive single-molecule magnetism and hysteresis up to 14 K in oxide clusterfullerenes Dy(2)O@C(72) and Dy(2)O@C(74) with fused pentagon pairs and flexible Dy–(μ(2)-O)–Dy angle
title_sort shape-adaptive single-molecule magnetism and hysteresis up to 14 k in oxide clusterfullerenes dy(2)o@c(72) and dy(2)o@c(74) with fused pentagon pairs and flexible dy–(μ(2)-o)–dy angle
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7116574/
https://www.ncbi.nlm.nih.gov/pubmed/33437409
http://dx.doi.org/10.1039/d0sc00624f
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