New Synthetic Route toward Heterometallic 3d鈥?d鈥?and 3d鈥?f Single-Molecule Magnets. The First CoII鈥揗nIII Heterometallic Complex

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• 作者：Guilherme P. Guedes ; St茅phane Soriano ; Luiza A. Mercante ; Nivaldo L. Speziali ; Miguel A. Novak ; Marius Andruh ; Maria G. F. Vaz
• 刊名：Inorganic Chemistry
• 出版年：2013
• 出版时间：August 5, 2013
• 年：2013
• 卷：52
• 期：15
• 页码：8309-8311
• 全文大小：220K
• 年卷期：v.52,no.15(August 5, 2013)
• ISSN：1520-510X

文摘

Four tetranuclear heterometallic complexes, [Co^II₂Mn₂^III(dpm)₄(MeO)₆] (1) and [Ln^III₂Mn^III₂(dpm)₆(MeO)₆(MeOH)_n], where Ln = Gd (2, n = 2), Tb (3, n = 2), and Dy (4, n = 0), have been obtained following the same general synthetic route, namely, the one-pot reaction between 2,2,6,6-tetrametil-3,5-heptanodione (Hdpm), MnCl₂ and CoCl₂ or Ln(NO₃)₃ in the presence of sodium methoxide. Within the four compounds, the metal ions bridged by methoxide ligands display a defect-diheterocubane core. Compounds 1, 3, and 4 show slow relaxation of the magnetization below 4 K.