两个基于羧基-水分子链构筑的超分子镉配合物的合成、晶体结构和荧光性质（英文）

Syntheses, Crystal Structures and Luminescent Properties of Two Cadmium Supramolecular Complexes Based on Water-Carboxylate Chains

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。

Two cadmium supramolecular complexes, [Cd（HMPCA）2（2,2′-bpy）]·2H2O（1） and [Cd（HMPCA）2（phen）]·2.5H2O（2）（H2MPCA=5-methyl-1H-pyrazole-3-carboxylic acid, 2,2′-bpy=2,2′-bipyridine, phen=1,10-phenanthroline）, have been synthesized and characterized by elemental analysis, IR spectra and X-ray diffraction analysis.In 1 and 2, the mononuclear units are expanded to 3D supramolecular structures via O（C, N）-H …O hydrogen bonds, C-H … π interaction and π … π interaction. More interestingly, the water-carboxylate hydrogen bonded chains constructed by lattice water molecules and carboxylate groups play important role in the assembly of two supramolecular complexes. Besides, the thermal and luminescent properties of two complexes were also investigated. CCDC： 1011422, 1; 1011423, 2.