Guest-, light- and thermally-modulated spin crossover in [Fe-2(II)] supramolecular helicates

A new bis(pyrazolylpyridine) ligand (H2L) has been prepared to form functional [Fe-2(H2L)(3)](4+) metallohelicates. Changes to the synthesis yield six derivatives, X@[Fe-2(H2L)(3)]X(PF6)(2)center dot xCH(3)OH (1, x = 5.7 and X = Cl; 2, x = 4 and X = Br), X@[Fe-2(H2L)(3)]X(PF6)(2)center dot yCH(3)OH...

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Detalles Bibliográficos
Autores: Darawsheh, Mohanad D., Barrios Moreno, Leoní Alejandra, Roubeau, Olivier, Teat, Simon J., Aromí Bedmar, Guillem
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2016
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/153819
Acceso en línea:https://hdl.handle.net/2445/153819
Access Level:acceso abierto
Palabra clave:Ferro
Lligands
Química supramolecular
Iron
Ligands
Supramolecular chemistry
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spelling Guest-, light- and thermally-modulated spin crossover in [Fe-2(II)] supramolecular helicatesDarawsheh, Mohanad D.Barrios Moreno, Leoní AlejandraRoubeau, OlivierTeat, Simon J.Aromí Bedmar, GuillemFerroLligandsQuímica supramolecularIronLigandsSupramolecular chemistryA new bis(pyrazolylpyridine) ligand (H2L) has been prepared to form functional [Fe-2(H2L)(3)](4+) metallohelicates. Changes to the synthesis yield six derivatives, X@[Fe-2(H2L)(3)]X(PF6)(2)center dot xCH(3)OH (1, x = 5.7 and X = Cl; 2, x = 4 and X = Br), X@[Fe-2(H2L)(3)]X(PF6)(2)center dot yCH(3)OH center dot H2O (1a, y = 3 and X = Cl; 2a, y = 1 and X = Br) and X@[Fe-2(H2L)(3)](I-3)(2)center dot 3Et(2)O (1b, X = Cl; 2b, X = Br). Their structure and functional properties are described in detail by single-crystal X-ray diffraction experiments at several temperatures. Helicates 1a and 2a are obtained from 1 and 2, respectively, by a single-crystal-to-single-crystal mechanism. The three possible magnetic states, [LS-LS], [LS-HS], and [HS-HS] can be accessed over large temperature ranges as a result of the structural non-equivalence of the FeII centers. The nature of the guest (Cl- vs. Br-) shifts the spin crossover (SCO) temperature by roughly 40 K. Also, metastable [LS-HS] or [HS-HS] states are generated through irradiation. All helicates (X@[Fe-2(H2L)(3)])(3+) persist in solution.Wiley-VCH2020202020162020info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion11 p.application/pdfhttps://hdl.handle.net/2445/153819Articles publicats en revistes (Química Inorgànica i Orgànica)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésVersió postprint del document publicat a: https://doi.org/10.1002/chem.201601080Chemistry-A European Journal, 2016, vol. 22, num. 25, p. 8635-8645https://doi.org/10.1002/chem.201601080info:eu-repo/grantAgreement/EC/FP7/258060(c) Wiley-VCH, 2016info:eu-repo/semantics/openAccessoai:recercat.cat:2445/1538192026-05-29T05:05:01Z
dc.title.none.fl_str_mv Guest-, light- and thermally-modulated spin crossover in [Fe-2(II)] supramolecular helicates
title Guest-, light- and thermally-modulated spin crossover in [Fe-2(II)] supramolecular helicates
spellingShingle Guest-, light- and thermally-modulated spin crossover in [Fe-2(II)] supramolecular helicates
Darawsheh, Mohanad D.
Ferro
Lligands
Química supramolecular
Iron
Ligands
Supramolecular chemistry
title_short Guest-, light- and thermally-modulated spin crossover in [Fe-2(II)] supramolecular helicates
title_full Guest-, light- and thermally-modulated spin crossover in [Fe-2(II)] supramolecular helicates
title_fullStr Guest-, light- and thermally-modulated spin crossover in [Fe-2(II)] supramolecular helicates
title_full_unstemmed Guest-, light- and thermally-modulated spin crossover in [Fe-2(II)] supramolecular helicates
title_sort Guest-, light- and thermally-modulated spin crossover in [Fe-2(II)] supramolecular helicates
dc.creator.none.fl_str_mv Darawsheh, Mohanad D.
Barrios Moreno, Leoní Alejandra
Roubeau, Olivier
Teat, Simon J.
Aromí Bedmar, Guillem
author Darawsheh, Mohanad D.
author_facet Darawsheh, Mohanad D.
Barrios Moreno, Leoní Alejandra
Roubeau, Olivier
Teat, Simon J.
Aromí Bedmar, Guillem
author_role author
author2 Barrios Moreno, Leoní Alejandra
Roubeau, Olivier
Teat, Simon J.
Aromí Bedmar, Guillem
author2_role author
author
author
author
dc.subject.none.fl_str_mv Ferro
Lligands
Química supramolecular
Iron
Ligands
Supramolecular chemistry
topic Ferro
Lligands
Química supramolecular
Iron
Ligands
Supramolecular chemistry
description A new bis(pyrazolylpyridine) ligand (H2L) has been prepared to form functional [Fe-2(H2L)(3)](4+) metallohelicates. Changes to the synthesis yield six derivatives, X@[Fe-2(H2L)(3)]X(PF6)(2)center dot xCH(3)OH (1, x = 5.7 and X = Cl; 2, x = 4 and X = Br), X@[Fe-2(H2L)(3)]X(PF6)(2)center dot yCH(3)OH center dot H2O (1a, y = 3 and X = Cl; 2a, y = 1 and X = Br) and X@[Fe-2(H2L)(3)](I-3)(2)center dot 3Et(2)O (1b, X = Cl; 2b, X = Br). Their structure and functional properties are described in detail by single-crystal X-ray diffraction experiments at several temperatures. Helicates 1a and 2a are obtained from 1 and 2, respectively, by a single-crystal-to-single-crystal mechanism. The three possible magnetic states, [LS-LS], [LS-HS], and [HS-HS] can be accessed over large temperature ranges as a result of the structural non-equivalence of the FeII centers. The nature of the guest (Cl- vs. Br-) shifts the spin crossover (SCO) temperature by roughly 40 K. Also, metastable [LS-HS] or [HS-HS] states are generated through irradiation. All helicates (X@[Fe-2(H2L)(3)])(3+) persist in solution.
publishDate 2016
dc.date.none.fl_str_mv 2016
2020
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/153819
url https://hdl.handle.net/2445/153819
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.1002/chem.201601080
Chemistry-A European Journal, 2016, vol. 22, num. 25, p. 8635-8645
https://doi.org/10.1002/chem.201601080
info:eu-repo/grantAgreement/EC/FP7/258060
dc.rights.none.fl_str_mv (c) Wiley-VCH, 2016
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Wiley-VCH, 2016
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 11 p.
application/pdf
dc.publisher.none.fl_str_mv Wiley-VCH
publisher.none.fl_str_mv Wiley-VCH
dc.source.none.fl_str_mv Articles publicats en revistes (Química Inorgànica i Orgànica)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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