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以碘化汞为原料,分别与3,5-二(4-吡啶基)-1,2,4-三唑(L1),4-氨基-3,5-二(4-吡啶基)-1,2,4-三唑(L2)在N,N-二甲基甲酰胺(DMF)溶液中反应,合成了2个一维链状Hg(Ⅱ)配聚物{[Hg2I4(4-bpt)2]·3DMF}n(1),{[Hg2I4(L2)]·DMF}n(2)。用红外光谱、元素分析、X-射线单晶衍射对配合物进行了表征。X-射线单晶衍射表明,配聚物1中汞离子位于扭曲的配位四面体中心,相邻汞离子通过分别与L1的2个端基N原子配位,桥连形成了一维zig-zag链结构,碘离子占据配位四面体的剩余两配位点,配聚物1的一维链平行于bc平面。配合物2中汞离子位于扭曲的配位四面体中心,分别与L2的一个吡啶N原子和3个碘离子配位,其中2个碘离子充当桥联配体将相邻汞离子连接,形成了一维-Hg-I-Hg-I-的zig-zag链,相邻的-Hg-I-Hg-I-链进一步通过作为双齿配体的L2连接,形成一独特的一维双链梯状聚合物,配聚物2一维链平行于a方向。室温固态荧光测试显示,配聚物1在383.7nm处具有强的荧光发射,而配聚物2在299.7 nm和376.5 nm处具有强的荧光发射。
Using mercuric iodide as raw material, the reaction was carried out with 3,5-bis (4-pyridyl) -1,2,4-triazole (L1), 4-amino-3,5-bis (Hg2I4 (4-bpt)) (Hg2I4) was synthesized by the reaction of 2,4-triazole (L2) and N, N- dimethylformamide (DMF) 2] · 3DMF} n (1), {[Hg2I4 (L2)] · DMF} n (2). The complexes were characterized by FTIR, elemental analysis and X-ray single crystal diffraction. X-ray single crystal diffraction shows that the mercury ion in the polymer 1 is located at the center of the twisted coordination tetrahedron, and the adjacent mercury ions are coordinated by two terminal N atoms of L1 respectively, forming a one-dimensional zig- zag chain structure. The iodide ions occupy the remaining two coordination sites of coordination tetrahedra. The one-dimensional chain of polymer 1 is parallel to the bc plane. In the complex 2, the mercury ion is located at the center of the twisted coordination tetrahedron and coordinated with one pyridine N atom of L2 and three iodide ions respectively. Two iodide ions act as bridging ligands to link adjacent mercury ions to form One-dimensional zig-zag chain of one-dimensional Hg-I-Hg-I-, with the adjacent -Hg-I-Hg-I- chain further linked by L2 as a bidentate ligand, forms a unique one- Polymer, Polymer 2 One-dimensional chain parallel to a direction. Solid-state fluorescence measurements at room temperature showed that ligand 1 had strong fluorescence emission at 383.7 nm whereas ligand 2 had strong fluorescence emission at 299.7 nm and 376.5 nm.