配位聚合物[Cu(OPT)_2]_n的合成及表征

Synthesis and Characterization of A Coordination Polymer [Cu(OPT)_2]_n

利用水热法,以3-(3-羟基)-5-(吡啶-2-基)-1,2,4-三唑和硝酸铜为原料,合成一个结构新颖的3D超分子配位聚合物[Cu(OPT)2]n(1)。并对其进行了X-射线单晶衍射、元素分析、红外检测及热稳定性分析等结构测定和表征。结果表明,该配位聚合物属于单斜晶系,P21/n空间群,中心Cu(Ⅱ)离子与四个氮原子配位,形成四配位的平面正方形结构,其中两个氮原子来自两个配体的三唑环,另两个氮原子来自两个配体的吡啶环。配合物中存在分子内三中心氢键,并通过分子间氢键作用形成3D超分子结构。

Hydrothermal reaction of Cu（Ⅱ） salts and 3-（ 3- oxyphenyl）- 5-（ pyridin- 2- yl）- 1,2,4- triazole in the Neutral aqueous solution yielded a novel metal- organic coordination polymer formulated as [Cu（ OPT）2]n（ 1）,which was characterized by single- crystal X- ray diffraction,elemental analyses,IR spectra and thermogravimetric analysis. The study showed that complexe 1 was monoclinic crystal system and P21/ n space group,and 4- coordinated cupric ion was surrounded by a nitrogen atom of triazole,and a nitrogen atom of pyridyl provided by two OPT,respectively,forming a parallelogram coordination geometry. Furthermore,the system contained a intramolecular three- center hydrogen bonding,while the 3D supramolecular structure of complexe（ 1） was constructed by intermolecular H- bonding.