新型共晶配合物[Co(1,10-phen)_(2)(AcO)]·H_(2)SDA·11H_(2)O的合成、晶体结构及性质

Synthesis,Crystal Structures and Properties of A Novel Co-crystal Complex[Co(1,10-phen)_(2)(AcO)]·H_(2)SDA·11H_(2)O

采用溶剂热法,以4,4′-二苯乙烯二羧酸,1,10-邻菲罗啉和乙酸钴为原料,构筑了一个新型共晶钴配合物[Co(1,10-phen)_(2)(AcO)]·H_(2)SDA·11H_(2)O(CCDC:1983364,1,10-phen=1,10-邻菲罗啉,H_(2)SDA=4,4′-二苯乙烯二羧酸),其结构和性质经FL,IR,元素分析,TGA和X-射线单晶衍射表征。结果表明:配合物属三斜晶系,Pī空间群。配合物是由一个单核钴配合物以及一个H_(2)SDA分子构成的共晶配合物,其中单核钴配合物中的Co(Ⅱ)分别与乙酸根中的两个氧原子以及两个1,10-邻菲罗啉配体中的4个氮原子配位,形成了一个六配位的CoN_(4)O_(2)八面体构型。共晶化合物分子间通过O—H…O氢键形成二维结构,再经π…π堆积作用形成三维空间构型。配合物在低浓度条件下表现出荧光性质,并存在荧光浓度自猝灭效应。

A Novel cobalt co-crystal complex,[Co(1,10-phen)_(2)(AcO)]·H_(2)SDA·11H_(2)O,(CCDC:1983364,1,10-phen=1,10-Phenanthroline monohydrate,H2SDA=4,4′-stilbenedicarboxylic acid)was synthesized by solvothermal method using 1,10-phenanthroline monohydrate,4,4′-stilbenedicarboxylic acid and Co(NO_(3))_(2)·6H_(2)O as raw material.The structure and properties were characterized by FL,IR,elemental analysis,TGA and X-ray single crystal diffraction.The results indicated that the co-crystal complex belongs to the triclinic system,space group Pī,contain a mononuclear cobalt complex and a H_(2)SDA molecule.In the mononuclear cobalt complex,central ion CoⅡ was six coordinated by two oxygen atom from acetate moiety and four nitrogen atoms from 1,10-phen to give a octahedral geometry CoN_(4)O_(2).The co-crystal compound was constructed as a 2D structure through O—H…O hydrogen bonds between intermolecular,and a 3D network was formed byπ…πstacking interaction.Furthermore,the co-crystal complex have stronger fluorescence property,and exist fluorescence concentration self-quenching effect.