Slow magnetization dynamics in Co(ii)/Co(iii) triethanolamine/pivalate complexes
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 un...
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Royal Society of Chemistry
2018
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| 005 | 20230518205720.0 | ||
| 008 | 190410s2018 xx ||||fo|||| 00| 0 eng|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-85058166010 | |
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 030 | |a DTARA | ||
| 100 | 1 | |a Sarto, C. | |
| 245 | 1 | 0 | |a Slow magnetization dynamics in Co(ii)/Co(iii) triethanolamine/pivalate complexes |
| 260 | |b Royal Society of Chemistry |c 2018 | ||
| 270 | 1 | 0 | |m Alborés, P.; Departamento de Quimica Inorganica,Analitica y Quimica Fisica/INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires Pabellón, 2 Ciudad Universitaria, Argentina; email: albores@qi.fcen.uba.ar |
| 506 | |2 openaire |e Política editorial | ||
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| 520 | 3 | |a 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. |l eng | |
| 536 | |a Detalles de la financiación: Universidad de Buenos Aires | ||
| 536 | |a Detalles de la financiación: CA15128 | ||
| 536 | |a Detalles de la financiación: Agencia Nacional de Promoción Científica y Tecnológica | ||
| 536 | |a Detalles de la financiación: Conseil Régional Aquitaine | ||
| 536 | |a Detalles de la financiación: Consejo Nacional de Investigaciones Científicas y Técnicas, INST 41/863, DFG SPP1601 | ||
| 536 | |a Detalles de la financiación: Conseil National de la Recherche Scientifique | ||
| 536 | |a Detalles de la financiación: We gratefully acknowledge UBA, ANPCYT, CONICET, DFG SPP1601, INST 41/863, University of Bordeaux, the Région Nouvelle Aquitaine, the CNRS, the MOLSPIN COST action CA15128 and the GdR MCM-2: Magnétisme et Commutation Moléculaires for funding resources. PA is a staff member of CONICET. The authors gratefully acknowledge Prof Dr Eva Rentschler for providing access to the computing time granted on the supercomputer Mogon at Johannes Gutenberg University Mainz (hpc.uni-mainz.de). | ||
| 593 | |a 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 | ||
| 593 | |a CNRS, CRPP, UMR 5031, Pessac, 33600, France | ||
| 593 | |a Univ. Bordeaux, CRPP, UMR 5031, Pessac, F-33600, France | ||
| 593 | |a Institut für Physikalische Chemie, Universität Stuttgart Pfaffenwaldring, 55 D-70569, Stuttgart, Germany | ||
| 690 | 1 | 0 | |a ELECTRON SPIN RESONANCE SPECTROSCOPY |
| 690 | 1 | 0 | |a MAGNETIC SUSCEPTIBILITY |
| 690 | 1 | 0 | |a MAGNETISM |
| 690 | 1 | 0 | |a QUANTUM CHEMISTRY |
| 690 | 1 | 0 | |a SYNTHESIS (CHEMICAL) |
| 690 | 1 | 0 | |a TRIETHANOLAMINE |
| 690 | 1 | 0 | |a AC MAGNETIC SUSCEPTIBILITY |
| 690 | 1 | 0 | |a ANISOTROPIC EXCHANGE INTERACTION |
| 690 | 1 | 0 | |a COBALT COMPLEXES |
| 690 | 1 | 0 | |a MAGNETIC BEHAVIOUR |
| 690 | 1 | 0 | |a MAGNETIZATION DYNAMICS |
| 690 | 1 | 0 | |a QUANTUM CHEMICAL COMPUTATIONS |
| 690 | 1 | 0 | |a STRUCTURAL CHARACTERIZATION |
| 690 | 1 | 0 | |a ZERO-FIELD SPLITTINGS |
| 690 | 1 | 0 | |a COBALT COMPOUNDS |
| 700 | 1 | |a Rouzières, M. | |
| 700 | 1 | |a Liu, J.-L. | |
| 700 | 1 | |a Bamberger, H. | |
| 700 | 1 | |a Van Slageren, J. | |
| 700 | 1 | |a Clérac, R. | |
| 700 | 1 | |a Alborés, P. | |
| 773 | 0 | |d Royal Society of Chemistry, 2018 |g v. 47 |h pp. 17055-17066 |k n. 47 |p Dalton Trans. |x 14779226 |t Dalton Transactions | |
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| 856 | 4 | 0 | |u https://doi.org/10.1039/c8dt04041a |y DOI |
| 856 | 4 | 0 | |u https://hdl.handle.net/20.500.12110/paper_14779226_v47_n47_p17055_Sarto |y Handle |
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