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以5-甲基-3-吡唑甲酸(H2MPCA)为主配体,在螯合配体菲咯琳(phen)或2,2′-联吡啶(2,2′-bpy)的存在条件下,与醋酸镉在常温下反应得到2个基于氢键构筑的羧基-水分子链的超分子化合物,[Cd(HMPCA)2(2,2′-bpy)]·2H2O(1)和[Cd(HMPCA)2(phen)]·2.5H2O(2),并通过元素分析、红外光谱、热重分析、X-射线衍射等对其结构进行了表征。结构分析表明,在化合物1和2中,单核镉的配合物和游离水分子通过氢键及π…π堆积作用形成了三维超分子结构,在此过程中,游离水和羧基构筑的链状水分子簇起着非常重要的作用。此外,我们还研究了化合物1和2的热重和荧光性质。
In the presence of 5-methyl-3-pyrazolecarboxylic acid (H2MPCA) as the main ligand in the presence of the chelating ligand phen or 2,2’-bipyridyl (2,2’-bpy) (Cd (HMPCA) 2 (2, 2’-bpy)] · 2H2O (1) and [Cd (H 2 CO 2) 2] were synthesized by reaction with cadmium acetate at normal temperature to obtain two supramolecular compounds based on hydrogen bonds. HMPCA) 2 (phen)] · 2.5H2O (2) were synthesized and characterized by elemental analysis, IR, TG, XRD and so on. The structural analysis shows that in compounds 1 and 2, the complexes of mononuclear cadmium and free water molecules form a three-dimensional supramolecular structure through the hydrogen bonding and the π ... π stacking effect. In this process, the free water and the chain of carboxyl groups Water clusters play a very important role. In addition, we also investigated the thermogravimetric and fluorescent properties of compounds 1 and 2.