Structural and magnetic characterization of two tetranuclear Cu(II) complexes with closed‐cubane‐like core framework

Two novel tetranuclear Cu(II) complexes [Cu4(L1)4]·3(H2O) (1) and [Cu4(H2L2)4(H2O)4] (2) ( H2L1 = (E)-2-((1-hydroxybutan-2-ylimino)methyl)phenol; H4L2 = 2-((2-hydroxy-3-methoxybenzylidene)amino)-2-hydroxymethylpropane-1,3-diol) were synthesized from the self-assembly of copper(II) perchlorate and th...

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Autores: Manna, Subal Chandra, Manna, Soumen, Paul, Aparup, Zangrando, Ennio, Figuerola i Silvestre, Albert, Dolai, Samar, Das, Kalipada
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2017
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:2445/155261
Acceso en línea:https://hdl.handle.net/2445/155261
Access Level:acceso abierto
Palabra clave:Coure
Estructura cristal·lina (Sòlids)
Copper
Layer structure (Solids)
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spelling Structural and magnetic characterization of two tetranuclear Cu(II) complexes with closed‐cubane‐like core frameworkManna, Subal ChandraManna, SoumenPaul, AparupZangrando, EnnioFiguerola i Silvestre, AlbertDolai, SamarDas, KalipadaCoureEstructura cristal·lina (Sòlids)CopperLayer structure (Solids)Two novel tetranuclear Cu(II) complexes [Cu4(L1)4]·3(H2O) (1) and [Cu4(H2L2)4(H2O)4] (2) ( H2L1 = (E)-2-((1-hydroxybutan-2-ylimino)methyl)phenol; H4L2 = 2-((2-hydroxy-3-methoxybenzylidene)amino)-2-hydroxymethylpropane-1,3-diol) were synthesized from the self-assembly of copper(II) perchlorate and the tridentate Schiff base ligands. Both complexes crystallize in the tetragonal system with space group I 41/a and form tetranuclear species with closed-cubane like core framework. Both the complexes possess a S4 axis but of different stereochemistry due to the different arrangement of the ligands about the copper ions. Variable temperature magnetic susceptibility measurements indicate an overall weak antiferromagnetic exchange coupling in 1, while ferromagnetic exchange coupling in 2. In agreement with their closed-cubane structure, the magnetic behavior of the two complexes have been studied by employing the isotropic spin Hamiltonian of type H = J1 (S1S3 + S1S4 + S2S3 + S2S4) - J2 (S1S2 + S3S4) (J1 describes the magnetic exchange coupling between the four Cu(II) pairs with short Cu···Cu distances, while J2 characterizes the magnetic exchange coupling between the remaining two intermetallic pairs with long distances). The PHI program was used to study their magnetic behavior. A good agreement between the experimental and fitted curves was found with the following parameters: g = 2.14, J1 = -20.3 cm-1 and J2 = 0 cm-1 for 1 and g = 2.10, J1 = 101.1 cm-1 and J2 = -51.5 cm-1 for 2.Wiley-VCH2020202020172020info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion6 p.application/pdfhttps://hdl.handle.net/2445/155261Articles 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/slct.201700669Chemistryselect, 2017, vol. 2, num. 11, p. 3317-3322https://doi.org/10.1002/slct.201700669(c) Wiley-VCH, 2017info:eu-repo/semantics/openAccessoai:recercat.cat:2445/1552612026-05-29T05:05:01Z
dc.title.none.fl_str_mv Structural and magnetic characterization of two tetranuclear Cu(II) complexes with closed‐cubane‐like core framework
title Structural and magnetic characterization of two tetranuclear Cu(II) complexes with closed‐cubane‐like core framework
spellingShingle Structural and magnetic characterization of two tetranuclear Cu(II) complexes with closed‐cubane‐like core framework
Manna, Subal Chandra
Coure
Estructura cristal·lina (Sòlids)
Copper
Layer structure (Solids)
title_short Structural and magnetic characterization of two tetranuclear Cu(II) complexes with closed‐cubane‐like core framework
title_full Structural and magnetic characterization of two tetranuclear Cu(II) complexes with closed‐cubane‐like core framework
title_fullStr Structural and magnetic characterization of two tetranuclear Cu(II) complexes with closed‐cubane‐like core framework
title_full_unstemmed Structural and magnetic characterization of two tetranuclear Cu(II) complexes with closed‐cubane‐like core framework
title_sort Structural and magnetic characterization of two tetranuclear Cu(II) complexes with closed‐cubane‐like core framework
dc.creator.none.fl_str_mv Manna, Subal Chandra
Manna, Soumen
Paul, Aparup
Zangrando, Ennio
Figuerola i Silvestre, Albert
Dolai, Samar
Das, Kalipada
author Manna, Subal Chandra
author_facet Manna, Subal Chandra
Manna, Soumen
Paul, Aparup
Zangrando, Ennio
Figuerola i Silvestre, Albert
Dolai, Samar
Das, Kalipada
author_role author
author2 Manna, Soumen
Paul, Aparup
Zangrando, Ennio
Figuerola i Silvestre, Albert
Dolai, Samar
Das, Kalipada
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Coure
Estructura cristal·lina (Sòlids)
Copper
Layer structure (Solids)
topic Coure
Estructura cristal·lina (Sòlids)
Copper
Layer structure (Solids)
description Two novel tetranuclear Cu(II) complexes [Cu4(L1)4]·3(H2O) (1) and [Cu4(H2L2)4(H2O)4] (2) ( H2L1 = (E)-2-((1-hydroxybutan-2-ylimino)methyl)phenol; H4L2 = 2-((2-hydroxy-3-methoxybenzylidene)amino)-2-hydroxymethylpropane-1,3-diol) were synthesized from the self-assembly of copper(II) perchlorate and the tridentate Schiff base ligands. Both complexes crystallize in the tetragonal system with space group I 41/a and form tetranuclear species with closed-cubane like core framework. Both the complexes possess a S4 axis but of different stereochemistry due to the different arrangement of the ligands about the copper ions. Variable temperature magnetic susceptibility measurements indicate an overall weak antiferromagnetic exchange coupling in 1, while ferromagnetic exchange coupling in 2. In agreement with their closed-cubane structure, the magnetic behavior of the two complexes have been studied by employing the isotropic spin Hamiltonian of type H = J1 (S1S3 + S1S4 + S2S3 + S2S4) - J2 (S1S2 + S3S4) (J1 describes the magnetic exchange coupling between the four Cu(II) pairs with short Cu···Cu distances, while J2 characterizes the magnetic exchange coupling between the remaining two intermetallic pairs with long distances). The PHI program was used to study their magnetic behavior. A good agreement between the experimental and fitted curves was found with the following parameters: g = 2.14, J1 = -20.3 cm-1 and J2 = 0 cm-1 for 1 and g = 2.10, J1 = 101.1 cm-1 and J2 = -51.5 cm-1 for 2.
publishDate 2017
dc.date.none.fl_str_mv 2017
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/2445/155261
url https://hdl.handle.net/2445/155261
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/slct.201700669
Chemistryselect, 2017, vol. 2, num. 11, p. 3317-3322
https://doi.org/10.1002/slct.201700669
dc.rights.none.fl_str_mv (c) Wiley-VCH, 2017
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Wiley-VCH, 2017
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 6 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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