Synthesis, crystal structures and luminescence properties of lanthanide oxalatophosphonates with a three-dimensional framework structure
Synthesis, crystal structures and luminescence properties of lanthanide oxalatophosphonates with a three-dimensional framework structure
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DOI：
10.1039/b814400a
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发表时间：
2009
影响因子：
3.3
通讯作者：
Yan-Yu Zhu;Zhengang Sun;Y. Zhao;Jing Zhang;Xin Lu;N. Zhang;Lei Liu;Fei Tong
中科院分区：
文献类型：
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作者：
Yan-Yu Zhu;Zhengang Sun;Y. Zhao;Jing Zhang;Xin Lu;N. Zhang;Lei Liu;Fei Tong
六个新的三维镧系双膦酸盐[Ln（HL）（C2 O 4）0.5（H2O）2]·H2O Ln = La（1），Ce（2），Pr（3），Nd（4），Sm（5），Eu（6）; H_3L = H_2O_3PCH（OH）CO_2H），并通过单晶X射线衍射和红外光谱对其结构进行了表征，元素分析和热重分析。化合物1-6是同晶型的，并且它们表现出复杂的三维（3D）开放骨架结构，具有沿c轴沿着的一维通道系统。镧系元素（III）离子通过膦酸酯配体的互连导致镧系元素膦酸酯层，并且这些层进一步通过草酸根阴离子桥接以形成3D开放框架。化合物6在室温下的固态下显示出强的红色发光。
Six new three-dimensional (3D) lanthanide oxalatophosphonates, [Ln(HL)(C2O4)0.5(H2O)2]·H2O (Ln = La (1), Ce (2), Pr (3), Nd (4), Sm (5), Eu (6); H3L = H2O3PCH(OH)CO2H), have been synthesized under hydrothermal conditions and structurally characterized by single-crystal X-ray diffraction as well as by infrared spectroscopy, elemental analysis and thermogravimetric analysis. Compounds 1–6 are isomorphous and they exhibit a complex three-dimensional (3D) open-framework structure with a one-dimensional channel system along the c-axis. The interconnection of the lanthanide(III) ions by phosphonate ligands results in a lanthanide phosphonate layer, and these layers are further bridged by oxalate anions to form a 3D open-framework. Compound 6 shows strong red luminescence in the solid state at room temperature.