Syntheses, crystal structures, and properties of three new metal selenites Na2Co2(SeO3)3, Na2Co1.67Ni0.33(SeO3)3, and Na2Ni2(SeO3)3

被引:11
|
作者
Yuan, Xiao-Qing [1 ,2 ]
Feng, Mei-Ling [1 ]
Li, Jian-Rong [1 ,2 ]
Huang, Xiao-Ying [1 ]
机构
[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Fujian, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
关键词
Cobalt; Nickel; Selenite; Hydro-/solvothermal; Magnetic properties; COORDINATION POLYMERS; HYDROTHERMAL SYNTHESIS; ABSORPTION-SPECTRA; DISELENITE; COBALT(II); FRAMEWORK; SERIES; CO; SELENATES; HYDRATE;
D O I
10.1016/j.jssc.2010.06.020
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Three new sodium cobalt (nickel) selenite compounds, namely, Na2Co2(SeO3)(3), Na2Co1.67Ni0.33(SeO3)(3), and Na2Ni2(SeO3)(3) have been hydro-/solvothermally synthesized in the mixed solvents of acetonitrile and water. Single-crystal X-ray diffraction analyses reveal that these isostructural compounds belong to the orthorhombic Cmcm space group and their structures feature three-dimensional open frameworks constructed by the two-dimensional layers of [MSeO3] pillared by the [SeO3](2-) groups. The two different types of Na+ ions reside in the intersecting two-dimensional channels parallel to the a- and c-axes, respectively. Their thermal properties have been investigated via TGA-DSC. The magnetic measurements indicate the existence of the antiferromagnetic interactions in these compounds. (C) 2010 Elsevier Inc. All rights reserved.
引用
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页码:1955 / 1961
页数:7
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