偶氮二苯甲酸及联吡啶构筑的三重穿插钴配位聚合物的溶剂热合成、结构和热稳定性研究

摘要

通过溶剂热方法合成了一个三重穿插的钴的配位聚合物,[Co(ADB)(H2ADB)(BPY)]· 2CH4OH(H2ADB为4,4'-偶氮二苯甲酸,BPY为4,4'-联吡啶),并通过元素分析、红外光谱、热分析和X射线单晶衍射对其进行了表征.晶体结构研究结果表明该配合物属单斜晶系,C2/c空间群.在配合物中,每个钴原子分别与4个羧酸配体上的4个氧原子和2个BPY分子的氮原子配位,形成扭曲八面体几何构型.相邻钴原子之间通过ADB2-、H2ADB和BPY相连形成二维网络结构.有意思的是,在分子中存在3个相互独立但结构相同的二维网状结构,形成三重贯穿.%A Co coordination polymer, [Co(ADB)(H2ADB)(BPY)]-2CH4OH (H2ADB=4,4'-azodibenzoic acid, BPY= 4,4' -bipyridine), has been synthesized by solvothermal reaction and characterized by element analysis, IR spectra, TGA curve and single-crystal X-ray diffraction. The crystallographic data shows that the title complex crystallizes in monoclinic system, space group C2/c. Each Co(II) is six-coordinated to four 0 atoms from two ADB2-, two H2ADB ligands, two nitrogen atoms from two BPY molecules and forms distorted octahedral coordination geometry. The Co2+ ions are interlinked by the ADB2-, H2ADBand BPY to yield 2D net. CCDC: 745404.