Study of the Luminescent and Magnetic Properties of a Series of Heterodinuclear [ZnIILnIII] Complexes
Study of the Luminescent and Magnetic Properties of a Series of Heterodinuclear [ZnIILnIII] Complexes
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DOI：
10.1021/ic200426w
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发表时间：
2011-07-04
影响因子：
4.6
通讯作者：
Andruh, Marius
中科院分区：
文献类型：
--
作者：
Pasatoiu, Traian D.;Tiseanu, Carmen;Andruh, Marius
在此，我们报告了一系列 13 种 [Zn(II)Ln(III)] 异双核配合物的合成、结构研究以及磁性和光物理性质，这些配合物是使用源自邻香草醛的席夫碱区室配体获得的 [H(2)valpn = 1,3-丙二基双(2-亚亚甲基-6-甲氧基-苯酚)]。该配合物是从[Zn(valpn)(H2O)]单核化合物和相应的镧系元素硝酸盐开始合成的。晶体学研究表明有两种结构类型：第一种为[Zn(H2O)(valpn)Ln(III)(O2NO)(3)]，包含10配位的Ln(III)离子，而第二种为[Zn(ONO2)(valpn)Ln(III)(H2O)(O2NO)(2)]中心点2H(2)O，稀土离子 是九配位的。 Zn-II 离子始终呈现方形锥体几何形状。第一种结构类型包含较大的 Ln 离子 (4f(0)-4f(9))，而第二种结构类型则针对较小的离子 (4f(8)-4f(11))。镝衍生物以两种形式结晶。对含有 Nd-III、Sm-III、Tb-III、Dy-III 和 Yb-III 的异双核化合物的发光研究表明，[Zn(valpn)(H2O)] 部分充当天线。研究了顺磁性[Zn(II)Ln(III)]配合物的磁性。
Herein, we report the synthesis, structural investigation, and magnetic and photophysical properties of a series of 13 [Zn(II)Ln(III)] heterodinuclear complexes, which have been obtained employing a Schiff-base compartmental ligand derived from o-vanillin [H(2)valpn = 1,3-propanediylbis(2-iminomethylene-6-methoxy-phenol)]. The complexes have been synthesized starting from the [Zn(valpn)(H2O)] mononuclear compound and the corresponding lanthanide nitrates. The crystallographic investigation indicated two structural types: the first one, [Zn(H2O)(valpn)Ln(III)(O2NO)(3)], contains 10-coordinated Ln(III) ions, while in the second one, [Zn(ONO2)(valpn)Ln(III)(H2O)(O2NO)(2)] center dot 2H(2)O, the rare earth ions are nine-coordinated. The Zn-II ions always display a square-pyramidal geometry. The first structural type encompasses the larger Ln ions (4f(0)-4f(9)), while the second is found for the smaller ions (4f(8)-4f(11)). The dyskrosium derivative crystallizes in both forms. Luminescence studies for the heterodinuclear compounds containing Nd-III, Sm-III, Tb-III, Dy-III, and Yb-III revealed that the [Zn(valpn)(H2O)] moiety acts as an antenna. The magnetic properties for the paramagnetic [Zn(II)Ln(III)] complexes have been investigated.