Three-Dimensional 3d-4f Heterometallic Coordination Polymers: Synthesis, Structures, and Magnetic Properties

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• 作者：Qi Yue ; Jin Yang ; Guang-Hua Li ; Guo-Dong Li ; Wei Xu ; Jie-Sheng Chen ; and ; and Su-Ning Wang
• 刊名：Inorganic Chemistry
• 出版年：2005
• 出版时间：July 25, 2005
• 年：2005
• 卷：44
• 期：15
• 页码：5241 - 5246
• 全文大小：330K
• 年卷期：v.44,no.15(July 25, 2005)
• ISSN：1520-510X

文摘

Three new 3d-4f heterometallic coordination polymers, [Ln₂(H₂O)₄M₂(H₂O)₂(QA)₅]·nH₂O (H₂QA = quinolinic acid;Ln = Gd, M = Ni, n = 7 (1); Ln = Gd, M = Co, n = 6.5 (2); Ln = Dy, M = Co, n = 6.5 (3)), have beensynthesized through hydrothermal pretreatment and cooling-down crystallization. These compounds possess theisostructural 3D frameworks with 1D chairlike channels along the c axis, which are occupied by noncoordinatingwater molecules. Crystal data: for 1, C₃₅H₄₁Gd₂Ni₂N₅O₃₃, orthorhombic, space group Pna2₁, with a = 28.567(6) Å,b = 14.498(3) Å, c = 12.250(2) Å, and Z = 4; for 2, C₃₅H₄₀Gd₂Co₂N₅O_32.5, orthorhombic, space group Pna2₁, witha = 28.843(3) Å, b = 14.4325(13) Å, c = 12.2275(9) Å, and Z = 4; for 3, C₃₅H₄₀Dy₂Co₂N₅O_32.5, orthorhombic,space group Pna2₁, with a = 28.8471(14) Å, b = 14.4534(10) Å, c = 12.2520(7) Å, and Z = 4. The magneticbehaviors for the three compounds have been investigated.