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Lazzarini, I.C.; Funes, A.V.; Carrella, L.; Sorace, L.; Rentschler, E.; Alborés, P. "Magnetic study of a pentanuclear {co2IIICo 3II} cluster with a bent {coII3} motif" (2014) European Journal of Inorganic Chemistry(15):2561-2568
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Abstract:

We have synthesised and structurally characterised a new pentanuclear mixed-valent cobalt cluster of formula [CoII3Co III2(OH)2(piv)6(L) 2(H2O)4] (piv = trimethylacetate, H 2L = salicylideneanthranillic acid) from reaction of a dinuclear cobalt pivalate precursor with a Schiff base type ligand under mild reaction conditions. The core structure can be conveniently described as two fused Co3-μ3-OH triangles with a strict unique sharing vertex point. A complete picture of the magnetic behaviour of this compound is presented. Through combined use of susceptibility, magnetisation, and EPR data as well as broken-symmetry DFT calculations, we have supported the magnetic data that show weak and anisotropic exchange interaction between CoII ions affording an Seff = 1/2 ground state that is not completely isolated from the low-lying excited doublets at low temperature. Under the optimum applied field of 2 kOe, a frequency-dependent out-of-phase susceptibility signal can be observed below 4 K. However, no reliable relaxation rates could be extracted due to the narrow temperature range in which this behaviour was observed. Copyright © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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Documento: Artículo
Título:Magnetic study of a pentanuclear {co2IIICo 3II} cluster with a bent {coII3} motif
Autor:Lazzarini, I.C.; Funes, A.V.; Carrella, L.; Sorace, L.; Rentschler, E.; Alborés, P.
Filiación:Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE (CONICET), Naturales Universidad de Buenos Aires, Pabellõn 2, C1428EHA Buenos Aires, Argentina
Institute of Inorganic and Analytical Chemistry, Johannes Gutenberg University of Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
Dipartimento di Chimica u. Schiff, UdR INSTM, Università di Firenze, Via della Lastruccia 3, 50019 Sesto Fiorentino, Firenze, Italy
Palabras clave:Cluster compounds; Cobalt; Density functional calculations; EPR spectroscopy; Magnetic properties; Mixed-valent compounds
Año:2014
Número:15
Página de inicio:2561
Página de fin:2568
DOI: http://dx.doi.org/10.1002/ejic.201402089
Título revista:European Journal of Inorganic Chemistry
Título revista abreviado:Eur. J. Inorg. Chem.
ISSN:14341948
CODEN:EJICF
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14341948_v_n15_p2561_Lazzarini

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Citas:

---------- APA ----------
Lazzarini, I.C., Funes, A.V., Carrella, L., Sorace, L., Rentschler, E. & Alborés, P. (2014) . Magnetic study of a pentanuclear {co2IIICo 3II} cluster with a bent {coII3} motif. European Journal of Inorganic Chemistry(15), 2561-2568.
http://dx.doi.org/10.1002/ejic.201402089
---------- CHICAGO ----------
Lazzarini, I.C., Funes, A.V., Carrella, L., Sorace, L., Rentschler, E., Alborés, P. "Magnetic study of a pentanuclear {co2IIICo 3II} cluster with a bent {coII3} motif" . European Journal of Inorganic Chemistry, no. 15 (2014) : 2561-2568.
http://dx.doi.org/10.1002/ejic.201402089
---------- MLA ----------
Lazzarini, I.C., Funes, A.V., Carrella, L., Sorace, L., Rentschler, E., Alborés, P. "Magnetic study of a pentanuclear {co2IIICo 3II} cluster with a bent {coII3} motif" . European Journal of Inorganic Chemistry, no. 15, 2014, pp. 2561-2568.
http://dx.doi.org/10.1002/ejic.201402089
---------- VANCOUVER ----------
Lazzarini, I.C., Funes, A.V., Carrella, L., Sorace, L., Rentschler, E., Alborés, P. Magnetic study of a pentanuclear {co2IIICo 3II} cluster with a bent {coII3} motif. Eur. J. Inorg. Chem. 2014(15):2561-2568.
http://dx.doi.org/10.1002/ejic.201402089