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Synthesis, structures and magnetic properties of [(η(9)-C(9)H(9))Ln(η(8)-C(8)H(8))] super sandwich complexes

Sandwich complexes are an indispensable part of organometallic chemistry, which is becoming increasingly important in the field of lanthanide-based single molecule magnets. Herein, a fundamental class of pure sandwich complexes, [(η(9)-C(9)H(9))Ln(η(8)-C(8)H(8))] (Ln=Nd, Sm, Dy, Er), is reported. Th...

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Autores principales: Münzfeld, L., Schoo, C., Bestgen, S., Moreno-Pineda, E., Köppe, R., Ruben, M., Roesky, P. W.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6637141/
https://www.ncbi.nlm.nih.gov/pubmed/31316061
http://dx.doi.org/10.1038/s41467-019-10976-6
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author Münzfeld, L.
Schoo, C.
Bestgen, S.
Moreno-Pineda, E.
Köppe, R.
Ruben, M.
Roesky, P. W.
author_facet Münzfeld, L.
Schoo, C.
Bestgen, S.
Moreno-Pineda, E.
Köppe, R.
Ruben, M.
Roesky, P. W.
author_sort Münzfeld, L.
collection PubMed
description Sandwich complexes are an indispensable part of organometallic chemistry, which is becoming increasingly important in the field of lanthanide-based single molecule magnets. Herein, a fundamental class of pure sandwich complexes, [(η(9)-C(9)H(9))Ln(η(8)-C(8)H(8))] (Ln=Nd, Sm, Dy, Er), is reported. These neutral and sandwiched lanthanide compounds exclusively contain fully π-coordinated coplanar eight and nine membered CH rings. The magnetic properties of these compounds are investigated, leading to the observation of slow relaxation of the magnetization, including open hysteresis loops up to 10 K for the Er(III) analogue. Fast relaxation of the magnetization is likewise observed near zero field, a highly important characteristic for quantum information processing schemes. Our synthetic strategy is straightforward and utilizes the reaction of [(η(8)-C(8)H(8))LnI(thf)(n)] complexes with [K(C(9)H(9))]. Although all compounds are fully characterized, structural details of the title compounds can also be deduced by Raman spectroscopy only.
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spelling pubmed-66371412019-07-19 Synthesis, structures and magnetic properties of [(η(9)-C(9)H(9))Ln(η(8)-C(8)H(8))] super sandwich complexes Münzfeld, L. Schoo, C. Bestgen, S. Moreno-Pineda, E. Köppe, R. Ruben, M. Roesky, P. W. Nat Commun Article Sandwich complexes are an indispensable part of organometallic chemistry, which is becoming increasingly important in the field of lanthanide-based single molecule magnets. Herein, a fundamental class of pure sandwich complexes, [(η(9)-C(9)H(9))Ln(η(8)-C(8)H(8))] (Ln=Nd, Sm, Dy, Er), is reported. These neutral and sandwiched lanthanide compounds exclusively contain fully π-coordinated coplanar eight and nine membered CH rings. The magnetic properties of these compounds are investigated, leading to the observation of slow relaxation of the magnetization, including open hysteresis loops up to 10 K for the Er(III) analogue. Fast relaxation of the magnetization is likewise observed near zero field, a highly important characteristic for quantum information processing schemes. Our synthetic strategy is straightforward and utilizes the reaction of [(η(8)-C(8)H(8))LnI(thf)(n)] complexes with [K(C(9)H(9))]. Although all compounds are fully characterized, structural details of the title compounds can also be deduced by Raman spectroscopy only. Nature Publishing Group UK 2019-07-17 /pmc/articles/PMC6637141/ /pubmed/31316061 http://dx.doi.org/10.1038/s41467-019-10976-6 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Münzfeld, L.
Schoo, C.
Bestgen, S.
Moreno-Pineda, E.
Köppe, R.
Ruben, M.
Roesky, P. W.
Synthesis, structures and magnetic properties of [(η(9)-C(9)H(9))Ln(η(8)-C(8)H(8))] super sandwich complexes
title Synthesis, structures and magnetic properties of [(η(9)-C(9)H(9))Ln(η(8)-C(8)H(8))] super sandwich complexes
title_full Synthesis, structures and magnetic properties of [(η(9)-C(9)H(9))Ln(η(8)-C(8)H(8))] super sandwich complexes
title_fullStr Synthesis, structures and magnetic properties of [(η(9)-C(9)H(9))Ln(η(8)-C(8)H(8))] super sandwich complexes
title_full_unstemmed Synthesis, structures and magnetic properties of [(η(9)-C(9)H(9))Ln(η(8)-C(8)H(8))] super sandwich complexes
title_short Synthesis, structures and magnetic properties of [(η(9)-C(9)H(9))Ln(η(8)-C(8)H(8))] super sandwich complexes
title_sort synthesis, structures and magnetic properties of [(η(9)-c(9)h(9))ln(η(8)-c(8)h(8))] super sandwich complexes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6637141/
https://www.ncbi.nlm.nih.gov/pubmed/31316061
http://dx.doi.org/10.1038/s41467-019-10976-6
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