NAGIOS: RODERIC FUNCIONANDO
A Mononuclear Uranium(IV) Single-Molecule Magnet with an Azobenzene Radical Ligand
DSpace Repository
A Mononuclear Uranium(IV) Single-Molecule Magnet with an Azobenzene Radical Ligand
|
View
|
|
| 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 | |||
| This document is a artículoDate2015 | |||
|
|||
| 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. | |||
|
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 |
|||
| https://doi.org/10.1002/chem.201503133 |
This item appears in the following Collection(s)
-
24 - Ciències de la Vida [504]