Syntheses and Magnetic Properties of New Tellurite鈥揝ulfate Compounds M2(TeO3)(SO4)路H2O (M = Co, Mn) with a Layer Structure Showing a Distorted Honeycomb Spi

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• 作者：Yingying Tang ; Zhangzhen He ; Wenbin Guo ; Suyun Zhang ; Ming Yang
• 刊名：Inorganic Chemistry
• 出版年：2014
• 出版时间：June 2, 2014
• 年：2014
• 卷：53
• 期：11
• 页码：5862-5868
• 全文大小：456K
• 年卷期：v.53,no.11(June 2, 2014)
• ISSN：1520-510X

文摘

New tellurite鈥搒ulfate compounds M₂(TeO₃)(SO₄)路H₂O (M = Co, Mn) are synthesized by a conventional hydrothermal method. Two compounds are found to exhibit a similar structure, which both crystallize in the orthorhombic system of space group Pbcm. Te⁴⁺ ions are coordinated by three O atoms, forming a quite distorted TeO₃ trigonal pyramid with lone-pair electrons, while magnetic Co²⁺ or Mn²⁺ ions construct a wavelike layer with a distorted honeycomb spin鈥搇attice. Magnetic measurements confirm that two isostructural compounds display different magnetic behaviors, in which Co₂(TeO₃)(SO₄)路H₂O shows a canted antiferromagnetic ordering at 15 K, while Mn₂(TeO₃)(SO₄)路H₂O shows a collinear antiferromagnetic ordering at 28 K. The nature of different magnetic behaviors between two isostructural compounds is also discussed.