反应温度控制的Zn(Ⅱ)配合物的合成及吸附性能

Synthesis and adsorption property of reaction temperature controlled zinc(Ⅱ) complexes

利用三[4-(1,2,4-三氮唑基)苯基]胺(T3)和羧酸辅助配体与Zn(II)盐在溶剂热及分层条件下反应,合成了2个配位聚合物:[Zn3(T3)(BDC)3(H2O)3]·4H2O(1,H2BDC,对苯二甲酸和[Zn3(T3)2(H2O)6]·(BDC)3·12H2O(2).配合物1在160℃下通过溶剂热反应得到,具有八重贯穿srs型拓扑的三维结构;配合物2在室温下通过分层法得到,具有kgd型拓扑的二维网络结构.研究了配合物的热稳定性和配合物1的吸附性能.结果表明,配合物1可以选择性地吸附水蒸气和甲醇,而对乙醇没有吸附.

Two zinc（Ⅱ） complexes [Zn3（T3）（BDC）3（H2O）3]·4H2O（1） and [Zn3（T3）2（H2O）6]·（BDC）3·12H2O（2） have been synthesized by reactions of tri（4-triazolylphenyl）amine（T3） and terephthalic acid （1,4-H2BDC） as auxiliary ligand using solvothermal and slow diffusion method. The complexes were characterized by IR, single crystal and powder X-ray diffractions, thermogravimetric （TGA） analysis. Complex 1 is an 8-fold interpenetrated 3D framework with 103-srs topology, and 2 is a 2D network with kgd topology. The results imply that reaction temperature plays important role in determining the structure of the complexes. Thermal stability and adsorption property of the complexes were investigated and it was found that 1 shows selective adsorption of water, methanol over ethanol.