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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >The first examples of selenidogermanate salts with lanthanide complex counter cations: Solvothermal syntheses and characterizations of [{Ln(en) _3}_2(μ-OH)_2]Ge_2Se_6 (Ln = Eu, Ho) and [{Ho(dien)_2}_2(μ-OH)_2]Ge _2Se_6
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The first examples of selenidogermanate salts with lanthanide complex counter cations: Solvothermal syntheses and characterizations of [{Ln(en) _3}_2(μ-OH)_2]Ge_2Se_6 (Ln = Eu, Ho) and [{Ho(dien)_2}_2(μ-OH)_2]Ge _2Se_6

机译:亚硒酸锗酸盐与镧系元素络合物抗衡阳离子的第一个例子:[{Ln(en)_3} _2(μ-OH)_2] Ge_2Se_6(Ln = Eu,Ho)和[{Ho(dien)_2}的溶剂热合成和表征_2(μ-OH)_2] Ge _2Se_6

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摘要

The lanthanide selenidogermanates [{Eu(en)_3}_2(μ- OH)_2]Ge_2Se_6 (1), [{Ho(en)_3} _2(μ-OH)_2]Ge_2Se_6 (2), and [{Ho(dien)_2}_2(μ-OH)_2]Ge_2Se _6 (3) (en = ethylenediamine, dien = diethylenetriamine) were solvothermally prepared by the reactions of Eu_2O_3 (or Ho_2O_3), germanium, and selenium in en and dien solvents respectively. Compounds 1-3 are composed of selenidogermanate [Ge _2Se6]~(4-) anion and dinuclear lanthanide complex cation [{Ln(en)_3}_2(μ-OH)_2]~(4+) (Ln = Eu, Ho) or [{Ho(dien)_2}_2(μ-OH)_2] ~(4+). The [Ge_2Se_6]~(4-) anion is composed of two GeSe4 tetrahedra sharing a common edge. The dinuclear lanthanide complex cations are built up from two [Ln(en)_3] ~(3+) or [Ho(dien)_2]~(3+) ions joined by two μ-OH bridges. All lanthanide(III) ions are in eight-coordinate environments forming distorted bicapped trigonal prisms. In 1-3, three-dimensional supramolecular networks of the anions and cations are formed by N-H?Se and N-H?O hydrogen bonds. To the best of our knowledge, 1-3 are the first examples of selenidogermanate salts with lanthanide complex counter cations.
机译:镧系元素硒锗酸盐[{Eu(en)_3} _2(μ-OH)_2] Ge_2Se_6(1),[{Ho(en)_3} _2(μ-OH)_2] Ge_2Se_6(2)和[{Ho( dien)_2} _2(μ-OH)_2] Ge_2Se _6(3)(en =乙二胺,dien =二亚乙基三胺)分别通过Eu_2O_3(或Ho_2O_3),锗和硒在en和dien溶剂中的溶剂热法制备。化合物1-3由硒酸锗酸[Ge _2Se6]〜(4-)阴离子和双核镧系元素络合阳离子[{Ln(en)_3} _2(μ-OH)_2]〜(4+)组成(Ln = Eu,Ho )或[{Ho(dien)_2} _2(μ-OH)_2]〜(4+)。 [Ge_2Se_6]〜(4-)阴离子由两个具有共同边缘的GeSe4四面体组成。双核镧系元素络合阳离子由两个[Ln(en)_3]〜(3+)或[Ho(dien)_2]〜(3+)离子通过两个μ-OH桥连接而成。所有的镧系元素(III)离子都处于八坐标环境中,形成扭曲的三棱柱形三棱柱。在1-3中,阴离子和阳离子的三维超分子网络是由N-H 2 Se和N-H 2 O氢键形成的。据我们所知,1-3是硒酸锗锗酸盐与镧系元素络合物抗衡阳离子的第一个实例。

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