Hilgar J D, Flores B S, Rinehart J D
Department of Chemistry and Biochemistry, University of California - San Diego, La Jolla, CA 92093, USA.
Chem Commun (Camb). 2017 Jun 29;53(53):7322-7324. doi: 10.1039/c7cc02356a.
We present the first ferromagnetically-coupled Er complex with linked, high-anisotropy Er-COT (COT = cyclooctatetraene dianion) subunits. The dinuclear complex, [Er(μ-Cl)(COT)(THF)], demonstrates single-molecule magnetism with a single, zero-field magnetization relaxation barrier of U = 113 cm. This system offers evidence that anisotropy can be preserved in the presence of ferromagnetic linking of the Er-COT subunits, providing a rational means to build strong molecular magnets of tunable dimensionality.
我们展示了首个具有相连的、高各向异性铒-环辛四烯二价阴离子（COT）亚基的铁磁耦合铒配合物。双核配合物[Er(μ-Cl)(COT)(THF)]表现出单分子磁性，其单零场磁化弛豫势垒U = 113厘米。该体系证明了在铒-COT亚基的铁磁连接存在下各向异性能够得以保留，为构建维度可调的强分子磁体提供了一种合理的方法。
