Abstract

A series of novel copper (II), cadmium (II), and silver (I) coordination frameworks, {[CuL₂(H₂O)₂]·2(ClO₄)·2H₂O}_n (1), {[CdL₂(H₂O)₂]·2(ClO₄)·2H₂O}_n (2), and [AgL·CF₃SO₃]_n (3) based on 3,5-bis-(triazol-1-yl)pyridine(L), have been isolated and characterized by single-crystal X-ray diffraction. In 1 and 2, the bi-dentate L bridges neighboring Cu^II centers and Cd^II centers generating the one-dimensional (1D) double-chain cationic coordination polymer, in which lattice-free ClO₄^– and lattice water molecules are located between these neighboring 1D chains. In 3, these tri-dentate L bridge neighboring Ag^I centers, which construct the two-dimensional (2D) coordination framework. The terminal coordinated CF₃SO₃^– anions are decorated along the side of the 2D framework. Further, 1 also presents the novel example of cationic triazole-copper (II) coordination polymer for effectively capturing anion pollutants Cr₂O₇^2– in the water solutions. The solid-state luminescent properties of L and coordination polymers 2–3 were also investigated.

摘要

一系列新颖的铜（II），镉（II）和银（I）配位骨架{[CuL ₂（H ₂ O）₂ ]·2（ClO ₄）·2H ₂ O} _n（1），{ [CDL ₂（H ₂ O）₂ ]·2（CLO ₄）·2H ₂ ö} _ñ（2）和[AGL·CF ₃ SO ₃ ] _ñ（3）以3,5-双- （三唑已经分离出1-基）吡啶（L），并通过单晶X射线衍射对其进行了表征。在1和2中，二齿大号桥相邻的Cu ^II中心和Cd ^II中心产生的一维（1D）双链阳离子配位聚合物，其中晶格自由CLO ₄ ^-和晶格水分子位于这些相邻一支维链之间。在3中，这些三齿L桥邻近Ag ^I中心，它们构成了二维（2D）协调框架。终端协调CF ₃ SO ₃ ^-的阴离子沿着2D框架的侧装饰。此外，图1还展示了可有效捕获阴离子污染物Cr的阳离子三唑-铜（II）配位聚合物的新实例₂ O ₇ ^{2 –}在水溶液中。L和配位聚合物的固态发光性能2 - 3也进行了研究。