基于皮考啉酸的硝酮自由基中性铽（III）配合物中的单分子磁体行为。
Single-molecule magnetic behavior in a neutral terbium(III) complex of a picolinate-based nitronyl nitroxide free radical.
机构信息
Instituto de Ciencia Molecular, Universitat de València, Calle Catedrático José Beltrán 2, 46980 Paterna, Spain.
出版信息
Inorg Chem. 2011 Aug 15;50(16):7370-2. doi: 10.1021/ic2010425. Epub 2011 Jul 13.
PMID:21751792
Abstract
The terdentate anionic picolinate-based nitronyl nitroxide (picNN) free radical forms neutral and robust homoleptic complexes with rare earth-metal ions. The nonacoordinated Tb(3+) complex Tb(picNN)(3)·6H(2)O is a single-molecule magnet with an activation energy barrier Δ = 22.8 ± 0.5 K and preexponential factor τ(0) = (5.5 ± 1.1) × 10(-9) s. It shows magnetic hysteresis below 1 K.
摘要
齿状阴离子吡啶甲酸盐基硝酮氮氧自由基（picNN）形成中性和稳定的同核配合物与稀土金属离子。九配位Tb(3+)配合物 Tb(picNN)(3)·6H(2)O 是一种具有单分子磁体的特性，其激活能势垒Δ = 22.8 ± 0.5 K 和指数前因子 τ(0) = (5.5 ± 1.1) × 10(-9) s。它在 1 K 以下表现出磁滞现象。
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