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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/223181
New series of mononuclear β-diketonate cerium(iii) field induced single-molecule magnets
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Five new β-diketonate Ce3+ mononuclear complexes, [Ce(Btfa)3(H2O)2] (1), [Ce(Btfa)3(phen)] (2), [Ce
(Btfa)3(bipy)] (3), [Ce(Btfa)3(terpy)] (4) and [Ce(Btfa)3(bathophen)(DMF)] (5), where Btfa− = 4,4,4-trifluoro-1-
phenyl-1,3-butanedionate, phen = 1,10-phenanthroline, bipy = 2,2’-bipyridyl, terpy = 2,2’:6’,2’’-terpyridine
and bathophen = 4,7-diphenyl-1,10-phenanthroline, have been synthesized and structurally characterized
through X-ray diffraction of single crystals. The central Ce3+ atom displays a coordination number of 8 for
1, 2 and 3 and of 9 for 4 and 5. Under a 0 T external magnetic field, none of the given compounds exhibits
single molecule magnet (SMM) behaviour. However, a small magnetic field, between 0.02 and 0.1 T, is
enough for all the compounds to exhibit slow relaxation of the magnetization. A comprehensive magnetic
analysis, with experimental magnetic data and ab initio calculations, was undertaken for all the complexes,
and the study highlights the significance of the different spin relaxation mechanisms that must be considered for a Ce3+ lanthanide ion.
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TUBAU RIBOT, Ànnia, et al. New series of mononuclear β-diketonate cerium(iii) field induced single-molecule magnets. Dalton Transactions. 2024. Vol. 53, num. 22, pags. 9387-9405. ISSN 1477-9226. [consulted: 20 of August of 2026]. Available at: https://hdl.handle.net/2445/223181