Pardo, E.; Faus, J.; Julve, M.; Lloret, F.; Muñoz Roca, MDC.; Cano, J.; Ottenwaelder, X.... (2003). Long-Range Magnetic Coupling through Extended p-Conjugated Aromatic Bridges in Dinuclear Copper(II) Metallacyclophanes. Journal of the American Chemical Society. 125(36):10770-10771. https://doi.org/10.1021/ja030060f
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/140964
Title:
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Long-Range Magnetic Coupling through Extended p-Conjugated Aromatic Bridges in Dinuclear Copper(II) Metallacyclophanes
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Author:
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Pardo, E.
Faus, J.
Julve, M.
Lloret, F.
Muñoz Roca, María Del Carmen
Cano, J.
Ottenwaelder, X.
Journaux, Y.
Carrasco, R.
Blay, G.
Fernández, I.
Ruiz, R.
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UPV Unit:
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Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada
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Issued date:
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Abstract:
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[EN] Self-assembly of 1,4-phenylenebis(oxamate) and 4,4`-biphenylenebis(oxamate) ligands and Cu2+ ions gives two new dinuclear copper(II) metallacyclophanes where the two metal centers are connected by double para-substituted ...[+]
[EN] Self-assembly of 1,4-phenylenebis(oxamate) and 4,4`-biphenylenebis(oxamate) ligands and Cu2+ ions gives two new dinuclear copper(II) metallacyclophanes where the two metal centers are connected by double para-substituted aromatic diamide bridges. Despite the relatively large intramolecular Cu¿Cu distance of ca. 8 and 12 Å for each complex, magnetic susceptibility measurements evidence strong to moderately strong intramolecular antiferromagnetic couplings (¿J values of the order of 100 and 10 cm-1, respectively). Density functional theory calculations on these compounds and their homologues with linear oligo-p-phenylenediamide bridges predict a rather slow exponential decay of magnetic coupling with increasing intermetal distance (r values up to 25 Å) along this novel series of dicopper metalla-amidocyclophanes.
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Subjects:
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Metals
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Ligands
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Magnetic properties
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Aromatic compounds
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Quantum mechanics
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Copyrigths:
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Cerrado |
Source:
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Journal of the American Chemical Society. (issn:
0002-7863
)
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DOI:
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10.1021/ja030060f
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Publisher:
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American Chemical Society
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Publisher version:
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https://doi.org/10.1021/ja030060f
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Project ID:
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info:eu-repo/grantAgreement/EC//ERBFMRXCT980181/EU/
info:eu-repo/grantAgreement/MICYT//BQU2001-2928/ES/Msíntesis, Estructura y Propiedades Magnéticas de Compuestos con Interacción de Canje entre Centros Metálicos/
info:eu-repo/grantAgreement/MICYT//BQU2001-3017/ES/Complejos de metales de transición como catalizadores biomiméticos en síntesis orgánica: De la catálisis oxidativa a la catálisis de ácidos de Lewis/
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Thanks:
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This work was supported by the Ministerio de Ciencia y Tecnología (Spain) through the Plan Nacional de Investigación Científica, Desarrollo e Innovación Tecnológica (Projects BQU2001-2928 and BQU2001-3017) and the Ramón y ...[+]
This work was supported by the Ministerio de Ciencia y Tecnología (Spain) through the Plan Nacional de Investigación Científica, Desarrollo e Innovación Tecnológica (Projects BQU2001-2928 and BQU2001-3017) and the Ramón y Cajal program. Further support from the TMR program of the European Union (Contract ERBFM-RXCT980181) is acknowledged. E.P. thanks the Ministerio de Educación, Cultura y Deporte (Spain) for a grant.
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Type:
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Artículo
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