The Coordination of the Tetraselenidoantimonate [SbSe4]3− Anion with Trivalent Lanthanide Ions Tuned by Ethylene Polyamines

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• 作者：Dingxian Jia ; Qinyan Jin ; Jiangfang Chen ; Yingli Pan ; Yong Zhang
• 刊名：Inorganic Chemistry
• 出版年：2009
• 出版时间：September 7, 2009
• 年：2009
• 卷：48
• 期：17
• 页码：8286-8293
• 全文大小：978K
• 年卷期：v.48,no.17(September 7, 2009)
• ISSN：1520-510X

文摘

The solvothermal synthetic system Ln/Sb/Se (Ln = La, Eu) was investigated in different ethylene polyamines, and a series of lanthanum and europium selenidoantimonates [La(en)₂(dien)(η²-SbSe₄)] (Ia), [La(dien)₂(μ-η¹,η²-SbSe₄)] (Ib), [La(trien)₂(H₂O)]SbSe₄ (Ic), [La(en)(trien)(μ-η¹,η²-SbSe₄)] (Id), [Eu(en)₂(dien)(SbSe₄)] (IIa), [Eu(en)(trien)(η²-SbSe₄)] (IIb), and [Eu(dien)₂(η²-SbSe₄)] (IIc) (en = ethylenediamine, dien = diethylenetriamine, trien = triethylenetetramine) were prepared. A systematic investigation of the crystal structures showed that the soft Lewis basic ligand [SbSe₄]³⁻ can be tuned to coordinate to the hard Lewis acidic lanthanide ions as a monodentate ligand, mono-SbSe₄; a bidentate chelating ligand, η²-SbSe₄; or a tridentate bridging ligand, μ-η¹,η²-SbSe₄, by the ethylene polyamines or mixed ethylene polyamines used in the syntheses. The [SbSe₄]³⁻ anion exhibited different coordination modes for La³⁺ and Eu³⁺ ions in the presence of the same ethylene polyamine because of the different coordination numbers of La³⁺ and Eu³⁺ ions.