Synthesis, crystal structures, luminescent and magnetic properties of homodinuclear lanthanide complexes with a flexible tripodal carboxylate ligand.
Synthesis, crystal structures, luminescent and magnetic properties of homodinuclear lanthanide complexes with a flexible tripodal carboxylate ligand.
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DOI：
10.1039/c0dt01514h
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发表时间：
2011-03
影响因子：
4
通讯作者：
Ai-Jiang Zhang;Yawen Wang;W. Dou;Ming Dong;Yanling Zhang;Yu Tang;Weisheng Liu;Yu Peng
中科院分区：
文献类型：
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作者：
Ai-Jiang Zhang;Yawen Wang;W. Dou;Ming Dong;Yanling Zhang;Yu Tang;Weisheng Liu;Yu Peng
合成了六个新的具有柔性三足羧酸根配体（H（3）L）的同双核稀土配合物[Ln（2）L（2）（DMF）（4）]·4DMF（Ln = La（1），Nd（2），Eu（3），Gd（4），Tb（5），Dy（6），DMF = N，N-二甲基甲酰胺）。其中，1，2，3，4，6经单晶X射线衍射分析，晶体属单斜晶系，空间群为P2（1）/n，晶胞参数为：a = 13.309（2）B = 27.404（4），c = 16.686（3），β = 105.115（2），V = 5875.2（17）（3）。2的α = 13.3016（5）π，B = 27.1952（12）π，c = 16.6339（7）π，β = 105.030（2）和V = 5811.3（4）π，α = 13.2797（10）π，B = 27.072（2）π，c = 16.6564（13）π，3的β = 104.9390（10）和V = 5785.7（8）ε（3），a = 13.2855（3）ε，B = 27.0074（6）ε，c = 16.6357（3）ε，4的β = 104.9790（10）和V = 5766.2（2）ε（3），a = 13.2837（5）ε，对于6，B = 26.9105（10）Ω，c = 16.6066（6）Ω，β = 104.917（2）和V = 5736.3（4）Ω（3）。晶体结构表明，这些配合物是同构的，分子通过氢键连接从0维到3维的超分子结构。通过元素分析、红外光谱、X射线衍射和热重分析对它们进行了表征。不寻常的是，非发光Tb（III）的配合物得到。研究了Eu（III）配合物的物理性质和Gd（III）配合物的磁性。
Six new homodinuclear lanthanide(III) complexes with a flexible tripodal carboxylate ligand (H(3)L), of formulae [Ln(2)L(2)(DMF)(4)]·4DMF (Ln = La (1), Nd (2), Eu (3), Gd (4), Tb (5), Dy (6), DMF = N, N-Dimethylformamide) have been synthesized. Among them, 1, 2, 3, 4, 6 were characterized by single-crystal X-ray diffraction, which crystallized in the monoclinic space group P2(1)/n with a = 13.309(2) Å, b = 27.404(4) Å, c = 16.686(3) Å, β = 105.115(2) and V = 5875.2(17) Å(3) for 1, a = 13.3016(5) Å, b = 27.1952(12) Å, c = 16.6339(7) Å, β = 105.030(2) and V = 5811.3(4) Å(3) for 2, a = 13.2797(10) Å, b = 27.072(2) Å, c = 16.6564(13) Å, β = 104.9390(10) and V = 5785.7(8) Å(3) for 3, a = 13.2855(3) Å, b = 27.0074(6) Å, c = 16.6357(3) Å, β = 104.9790(10) and V = 5766.2(2) Å(3) for 4, a = 13.2837(5) Å, b = 26.9105(10) Å, c = 16.6066(6) Å, β = 104.917(2) and V = 5736.3(4) Å(3) for 6. The crystal structures reveal that these complexes are isostructural, and molecules are connected from 0D to 3D supramolecular structures by hydrogen bonds. All of them were characterized by elemental analysis, IR spectroscopy, XRD and TGA. Unusually, non-luminescent Tb(III) complex was obtained. The photophysical property of the Eu(III) complex and the magnetic property of Gd(III) complex are investigated and discussed in detail.