A Pentanuclear Manganese Single-Molecule Magnet with a Large Anisotropy

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• 作者：Chen-I Yang ; Wolfgang Wernsdorfer ; Gene-Hsiang Lee ; Hui-Lien Tsai
• 刊名：Journal of the American Chemical Society
• 出版年：2007
• 出版时间：January 24, 2007
• 年：2007
• 卷：129
• 期：3
• 页码：456 - 457
• 全文大小：125K
• 年卷期：v.129,no.3(January 24, 2007)
• ISSN：1520-5126

文摘

The reaction of MnCl₂·4H₂O (1 equiv), salicyladoxime (H₂salox) (1 equiv), and NaN₃ (1 equiv) in MeOH with NEt₄OH (1 equiv) gave (NEt₄)₃[Mn₅O(salox)₃(N₃)₆Cl₂] (2) in ~14% yield. Ferromagnetic exchange between the five Mn ions in 2 leads to an S = 11 ground state and is established as a new single-molecule magnet with an anisotropy energy, U_eff, of 40.3 K by frequency dependent out-of-phase alternating current susceptibility signals and temperature and sweep rate dependent hysteresis loops.