Organically Directed Bimetallic Sulfates Based on the Radii and Coordination Number: Synthesis, Structure and Characterization
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- 作者：Yunlong Fu ; Zhiwei Xu ; Jialin Ren ; Junying Yang
- 刊名：Crystal Growth & Design
- 出版年：2007
- 出版时间：June 2007
- 年：2007
- 卷：7
- 期：6
- 页码：1198 - 1204
- 全文大小：443K
- 年卷期：v.7,no.6(June 2007)
- ISSN：1528-7505
文摘
A series of organically directed bimetallic sulfates with one- and two-dimensional structures have been synthesizedhydrothermally. The 2D structures with formulas (C2H10N2)2[FeIII2FeII(SO4)6(H2O)4]·2H2O, I, (C2H10N2)2[FeIII2CdII(SO4)6(H2O)4]·2H2O, II, and (C2H10N2)2[FeIII2NiII(SO4)6(H2O)4]·2H2O, III, have identical brick-wall layers constructed from infinite ferrinatrite-type {Fe2(SO4)3}n chains jointed by transition metal ions M2+ (M = Fe, Cd, Ni); the 1D structures with the compositions[C2N2H10][Fe3O(SO4)6La(H2O)6]·3H2O, IV, [C2N2H10][Fe3O(SO4)6Ce(H2O)6]·3H2O, V, and [C4N2H12]1.5[Fe3O(SO4)6Cd(H2O)5]·2H2O, VI, possess sulfated trinuclear iron oxo clusters that are interconnected by Ln3+ or Cd2+cations to extended straight orzigzag chains. The assembly of iron sulfate, resulting from the increase of the radii and coordination numbers of second metalcenters, was modulated to afford a 1D chain or 0D cluster and further extended to form distinct 2D layer or 1D cluster-containingchain. The magnetic measurements reveal the presence of ferromagnetism for I at low temperature and two paramagnetic regionsfor VI.