Ionothermal Synthesis and Magnetic Studies of Novel Two-Dimensional Metal鈭扚ormate Frameworks

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• 作者：Paul J. Calderone ; Paul M. Forster ; Lauren A. Borkowski ; Simon J. Teat ; Mikhail Feygenson ; Meigan C. Aronson ; John B. Parise
• 刊名：Inorganic Chemistry
• 出版年：2011
• 出版时间：March 21, 2011
• 年：2011
• 卷：50
• 期：6
• 页码：2159-2167
• 全文大小：1069K
• 年卷期：v.50,no.6(March 21, 2011)
• ISSN：1520-510X

文摘

Five novel two-dimensional frameworks containing formate-bridged metal-centered octahedra are synthesized ionothermally from two ionic liquids previously unused as solvents in hybrid synthesis, 2-hydroxyethylammonium (HEA) formate, and 1-hydroxy-3-proplyammonium (HPA) formate. Templating effects of the cation from each ionic liquid drive the formation of different structures. [NH₃C₂H₄OH]₂[M(CHO₂)₄] (1: M = Co, 2: M = Ni) exhibit the same stoichiometry and connectivity as their manganese analogue (3: M = Mn), but the manganese form exhibits a different topology from 1 and 2. [NH₃C₃H₆OH][M(CHO₂)₃(H₂O)] (4: M = Co, 5: M = Mn) were synthesized using the HPA formate ionic liquid with a metal鈭抐ormate connectivity related to those of 1鈭?b>3. Canted antiferromagnetic ordering occurs at low temperatures (1: T_N = 7.0 K, 2: T_N = 4.6 K, 3: T_N = 8.0 K, 4: T_N = 7.0 K, 5: T_N = 9.2 K), similar to the magnetic properties previously reported for other metal鈭抐ormate hybrid materials.