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Sarto, C.; Rouzières, M.; Liu, J.-L.; Bamberger, H.; Van Slageren, J.; Clérac, R.; Alborés, P. "Slow magnetization dynamics in Co(ii)/Co(iii) triethanolamine/pivalate complexes" (2018) Dalton Transactions. 47(47):17055-17066
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Abstract:

We report the synthesis, structural characterization and a combined computational and experimental study of the magnetic properties of two pivalate cobalt complexes, a mononuclear Co(ii) one and a tetranuclear Co(ii) 3 Co(iii) mixed valence polynuclear one. The latter shows SMM behaviour revealed under an applied DC field with a thermal barrier of ca. 30 cm -1 competing with direct and Raman relaxation processes. The Orbach thermal barrier can be understood from the doublets energy ladder arising from the anisotropic exchange interaction among ground S eff = 1/2 of each Co(ii) sites. The strong local zero-field splitting of the S = 3/2 Co(ii) states affords these well isolated ground Kramers doublets. DC and AC magnetic susceptibility measurements as well as HF-EPR spectra support this interpretation. CASSCF quantum chemical computations have been also performed in order to aid the overall comprehension of the magnetic behaviour in the reported complexes. © 2018 The Royal Society of Chemistry.

Registro:

Documento: Artículo
Título:Slow magnetization dynamics in Co(ii)/Co(iii) triethanolamine/pivalate complexes
Autor:Sarto, C.; Rouzières, M.; Liu, J.-L.; Bamberger, H.; Van Slageren, J.; Clérac, R.; Alborés, P.
Filiación:Departamento de Quimica Inorganica,Analitica y Quimica Fisica/INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires Pabellón, 2 Ciudad Universitaria, Buenos Aires, C1428EHA, Argentina
CNRS, CRPP, UMR 5031, Pessac, 33600, France
Univ. Bordeaux, CRPP, UMR 5031, Pessac, F-33600, France
Institut für Physikalische Chemie, Universität Stuttgart Pfaffenwaldring, 55 D-70569, Stuttgart, Germany
Palabras clave:Electron spin resonance spectroscopy; Magnetic susceptibility; Magnetism; Quantum chemistry; Synthesis (chemical); Triethanolamine; AC Magnetic susceptibility; Anisotropic exchange interaction; Cobalt complexes; Magnetic behaviour; Magnetization dynamics; Quantum chemical computations; Structural characterization; Zero-field splittings; Cobalt compounds
Año:2018
Volumen:47
Número:47
Página de inicio:17055
Página de fin:17066
DOI: http://dx.doi.org/10.1039/c8dt04041a
Título revista:Dalton Transactions
Título revista abreviado:Dalton Trans.
ISSN:14779226
CODEN:DTARA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14779226_v47_n47_p17055_Sarto

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Citas:

---------- APA ----------
Sarto, C., Rouzières, M., Liu, J.-L., Bamberger, H., Van Slageren, J., Clérac, R. & Alborés, P. (2018) . Slow magnetization dynamics in Co(ii)/Co(iii) triethanolamine/pivalate complexes. Dalton Transactions, 47(47), 17055-17066.
http://dx.doi.org/10.1039/c8dt04041a
---------- CHICAGO ----------
Sarto, C., Rouzières, M., Liu, J.-L., Bamberger, H., Van Slageren, J., Clérac, R., et al. "Slow magnetization dynamics in Co(ii)/Co(iii) triethanolamine/pivalate complexes" . Dalton Transactions 47, no. 47 (2018) : 17055-17066.
http://dx.doi.org/10.1039/c8dt04041a
---------- MLA ----------
Sarto, C., Rouzières, M., Liu, J.-L., Bamberger, H., Van Slageren, J., Clérac, R., et al. "Slow magnetization dynamics in Co(ii)/Co(iii) triethanolamine/pivalate complexes" . Dalton Transactions, vol. 47, no. 47, 2018, pp. 17055-17066.
http://dx.doi.org/10.1039/c8dt04041a
---------- VANCOUVER ----------
Sarto, C., Rouzières, M., Liu, J.-L., Bamberger, H., Van Slageren, J., Clérac, R., et al. Slow magnetization dynamics in Co(ii)/Co(iii) triethanolamine/pivalate complexes. Dalton Trans. 2018;47(47):17055-17066.
http://dx.doi.org/10.1039/c8dt04041a