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A Mononuclear Uranium(IV) Single-Molecule Magnet with an Azobenzene Radical Ligand

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A Mononuclear Uranium(IV) Single-Molecule Magnet with an Azobenzene Radical Ligand

dc.contributor.author	M.A. Antunes
dc.contributor.author	J.T. Coutinho
dc.contributor.author	I.C. Santos
dc.contributor.author	J. Marçalo
dc.contributor.author	L.C.J. Pereira
dc.contributor.author	M. Almeida
dc.contributor.author	J.J. Baldoví
dc.contributor.author	E. Coronado
dc.contributor.author	A. Gaita-Ariño
dc.date.accessioned	2022-01-03T12:54:44Z
dc.date.available	2022-01-03T12:54:44Z
dc.date.issued	2015
dc.identifier.citation	M.A. Antunes J.T. Coutinho I.C. Santos J. Marçalo L.C.J. Pereira M. Almeida J.J. Baldoví E. Coronado A. Gaita-Ariño 2015 A Mononuclear Uranium(IV) Single-Molecule Magnet with an Azobenzene Radical Ligand Chemistry-A European Journal 21 17817 17826
dc.identifier.uri	https://hdl.handle.net/10550/81213
dc.description.abstract	A tetravalent uranium compound with a radical azobenzene ligand, namely, [{(SiMe2NPh)3‐tacn}UIV(η2‐N2Ph2.)] (2), was obtained by one‐electron reduction of azobenzene by the trivalent uranium compound [UIII{(SiMe2NPh)3‐tacn}] (1). Compound 2 was characterized by single‐crystal X‐ray diffraction and 1H NMR, IR, and UV/Vis/NIR spectroscopy. The magnetic properties of 2 and precursor 1 were studied by static magnetization and ac susceptibility measurements, which for the former revealed single‐molecule magnet behaviour for the first time in a mononuclear UIV compound, whereas trivalent uranium compound 1 does not exhibit slow relaxation of the magnetization at low temperatures. A first approximation to the magnetic behaviour of these compounds was attempted by combining an effective electrostatic model with a phenomenological approach using the full single‐ion Hamiltonian.
dc.relation.ispartof	Chemistry-A European Journal, 2015, vol. 21, p. 17817-17826
dc.title	A Mononuclear Uranium(IV) Single-Molecule Magnet with an Azobenzene Radical Ligand
dc.type	journal article	es_ES
dc.date.updated	2022-01-03T12:54:45Z
dc.identifier.doi	10.1002/chem.201503133
dc.identifier.idgrec	109963
dc.rights.accessRights	open access	es_ES