Three-Dimensional Frameworks Based on Dodecanuclear Dy鈥揾ydroxo Wheel Cluster with Slow Relaxation of Magnetization

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• 作者：Yi-Xia Ren ; Xiang-Jun Zheng ; Li-Cun Li ; Da-Qiang Yuan ; Miao An ; Lin-Pei Jin
• 刊名：Inorganic Chemistry
• 出版年：2014
• 出版时间：December 1, 2014
• 年：2014
• 卷：53
• 期：23
• 页码：12234-12236
• 全文大小：257K
• ISSN：1520-510X

文摘

Two new heterometallic coordination polymers, [Na₄Ln₁₂(stp)₈(OH)₁₆(H₂O)₁₂]路10H₂O [Ln = Dy (1) and Ho (2)], have been prepared from monosodium 2-sulfoterephthalate (NaH₂stp), dysprosium acetate, or holmium acetate. They are isostructural, possessing a [Ln₁₂(渭₃-OH)₁₆]²⁰⁺ wheel-cluster core based on four vertex-sharing cubane-like [Ln₄(渭₃-OH)₄]⁸⁺ units. The Ln₁₂ cores are linked by stp ligands into a three-dimensional (3D) architecture. Magnetic studies indicate that complex 1 exhibits slow relaxation of magnetization, and it can be regarded as the first 3D coordination assembly of a Dy₁₂ cluster single-molecule magnet.