Work

Single-Molecule Magnet Behavior in a Tb-Nitronyl Nitroxide Radical Network with [Tb3(NIT)2] Nodes

Year: 2024

Type: article

Abstract: Two rare two-dimensional Ln-radical networks, namely, [{Ln(tfa) 3 } 3 (NIT-4Py) 2 ] n [Ln III = 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 [Ln 3 (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 H coer = 110 Oe. This complex represents the first example of a Ln-nitronyl nitroxide SMM-based network.

Source: Inorganic Chemistry

DOI: 10.1021/acs.inorgchem.4c04071

Authors: Chao-Yi Jin, Xue-Lan Mei, Yan Zhou, Licun Li, Jean-Pascal Sutter

Institutions: Nankai University, Bengbu University, Centre National de la Recherche Scientifique, Laboratoire de Chimie de Coordination, Université de Toulouse

Language: English

Topic: Magnetism in coordination complexes

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funders: Indian National Science Academy, National Natural Science Foundation of China

Award: G1948306078