基于5-(3′,4′-二(四唑-5′-基)苯氧基)间苯二甲酸构筑的镧系金属配合物的合成、晶体结构及性质（英文）

Syntheses, Crystal Structures and Properties of Two Lanthanide-Metal Complexes Based on Flexible 3′,4′-Bis(terazol-5′-yl) phenoxy) isophthalic Acid

在水热条件下利用H_2btpa配体合成了2个镧系金属配合物{[Ln(btpa)(H_2O)(OH)]·bpy}n(Ln=Tb(1),Pr(2),H2btpa=5-(3′,4′-二(四唑-5′-基)苯氧基)间苯二甲酸,bpy=4,4′-联吡啶),并用元素分析、红外光谱、X射线粉末衍射、X射线单晶衍射对其进行了表征。配合物1和2中,双核镧系金属单元通过btpa2-配体以μ4:η1,η2,η1,η2的配位模式连接,形成二维网状结构,客体分子4,4′-联吡啶通过分子间的氢键作用存在于结构中。相邻的二维网通过氢键的识别作用以锁链形式拓展为三维超分子结构。室温下配合物1呈现出TbⅢ的特征荧光发射峰。

Two novel lanthanide metal complexes based on H2btpa ligand, namely {[Ln（btpa）（H2O）（OH）]·bpy}n（Ln=Tb（1）, Pr（2）, H2btpa=3′,4′-bis（terazol-5′-yl） phenoxy） isophthalic acid, bpy=4,4′-pyridine）, have been synthesized and structurally characterized by elemental analyses, IR spectroscopy, powder X-ray diffraction and single-crystal X-ray diffraction analyses. They possess the same 2D network, which is constructed from binuclear lanthanide units cross-linked by btpa2-ligands via μ4：η1,η2,η1,η2coordination mode with guest molecule bpy existing in the structure to form intermolecular hydrogen bond. Interestingly, the adjacent 2D networks are intercalated in a zipper fashion generating a 3D supramolecular structure through intermolecular hydrogen bonding. The luminescence experiments show that complex 1 exhibits typical TbⅢ-centered emissions in the visible region. CCDC： 1417525, 1; 1417526, 2.