Unprecedented (Cu<sub>2</sub>Ln)<i><sub>n</sub></i> Complexes (Ln = Gd<sup>3+</sup>, Tb<sup>3+</sup>): A New “Single Chain Magnet”
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The magnetic study of a trinuclear Cu−Gd−Cu complex confirms that such basic units self-assemble to yield a high spin species. A nice fit of the magnetic data is obtained for an infinite chain of tetranuclear Gd2Cu2 motifs linked through the Gd ions located at the opposite vertexes of the tetranuclear motifs according to two Cu−Gd coordination modes, a double bridging through phenoxo and alkoxo oxygen atoms and a single bridging through deprotonated amide functions. The two interaction pathways are ferromagnetic. Alternating current susceptibility measurements confirm that the equivalent copper−terbium entity is a single chain magnet with a barrier height for reversal of the magnetization equal to 28.5 K.
创建时间：
2016-05-06
