Chao-Yi Jin, Xue-Lan Mei*, Yan Zhou, Licun Li* and Jean-Pascal Sutter*,
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Single-Molecule Magnet Behavior in a Tb-Nitronyl Nitroxide Radical Network with [Tb3(NIT)2] Nodes
Two rare two-dimensional Ln-radical networks, namely, [{Ln(tfa)3}3(NIT-4Py)2]n [LnIII = Gd 1 and Tb 2; tfa– = trifluoroacetylacetonato; and NIT-4Py = 2-(4-pyridyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide], have been successfully constructed and characterized. In these complexes, each NIT-4Py radical functions as a tridentate ligand to ligate three Ln ions, creating a 2D network with linear five-spin [Ln3(NIT)2] nodes. Ferromagnetic Ln-NO interactions govern the characteristic magnetic behavior of a finite spin system. The Tb complex is shown to exhibit SMM behavior in a zero DC field, with an energy barrier for spin flipping of 53 K and hysteretic M-H behavior at 2.3 K, with a coercive field Hcoer = 110 Oe. This complex represents the first example of a Ln-nitronyl nitroxide SMM-based network.
期刊介绍：
Inorganic Chemistry publishes fundamental studies in all phases of inorganic chemistry. Coverage includes experimental and theoretical reports on quantitative studies of structure and thermodynamics, kinetics, mechanisms of inorganic reactions, bioinorganic chemistry, and relevant aspects of organometallic chemistry, solid-state phenomena, and chemical bonding theory. Emphasis is placed on the synthesis, structure, thermodynamics, reactivity, spectroscopy, and bonding properties of significant new and known compounds.
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