Glycine-Templated Manganese Sulfate with New Topology and Canted Antiferromagnetism

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• 作者：Zhehui Weng ; Zilu Chen ; Fupei Liang
• 刊名：Inorganic Chemistry
• 出版年：2009
• 出版时间：September 21, 2009
• 年：2009
• 卷：48
• 期：18
• 页码：8703-8708
• 全文大小：817K
• 年卷期：v.48,no.18(September 21, 2009)
• ISSN：1520-510X

文摘

A new glycine-templated manganese(II) sulfate, (C₂NO₂H₅)MnSO₄ (1), has been solvothermally synthesized and characterized crystallographically and magnetically. Crystal data for 1: monoclinic, space group P2₁/m, a = 4.8884(10) Å, b = 7.8676(14) Å, c = 8.0252(15) Å, β = 106.524(2)°, V = 295.90(10) ų, Z = 2. The glycine bridges Mn^II ions in μ₂ mode and sulfate in η³,μ⁴ mode. Along the b direction, the neighboring Mn^II ions were bridged to each other by two sulfate ions and one glycine ligand to form a triple-stranded braid. The adjacent braids were connected via the sulfate ions to give a two-dimensional framework with a novel binodal 4,6-connected (3²;4²;5²)(3⁴;4⁴;5⁴;6³) topology. The compound exhibits a spin-canted antiferromagnetic behavior with a weak ferromagnetic transition below 9 K, and the estimated canting angle is 0.13°.