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将邻苯二胺、3-吡啶甲酸与二氯化镉在1∶1的盐酸溶液中经水热反应,合成了一种超分子化合物[2-(3-pyridyl)benzimidazoleH2]24+.[Cd2Cl8]4-。通过元素分析、红外光谱、热重对其结构和性质进行了表征,用X-射线单晶衍射测定了该化合物的晶体结构。化合物晶体为单斜晶系,P21/c空间群。超分子化合物中的Cd2+与其周围4个氯离子配位,构成畸变三角锥构型的离子[CdCl4]2-,2个配阴离子[CdCl4]2-之间通过双氯桥键[Cd-Cl-Cd]构成五配位双核镉髤四元环状结构,并与2个2-(3-吡啶基)苯并咪唑两价阳离子,通过静电引力、氢键及π-π堆积作用形成三维网状超分子化合物。荧光测试表明该化合物具有较好的光致发光性能。
A novel supramolecular compound [2- (3-pyridyl) benzimidazoleH2] 24 + was synthesized via a hydrothermal reaction of o-phenylenediamine, 3-picolinic acid and cadmium dichloride in a 1: ] 4-. Its structure and properties were characterized by elemental analysis, IR and TG. The crystal structure of the compound was characterized by X-ray single crystal diffraction. The crystal of compound is monoclinic, P21 / c space group. The Cd2 + in the supramolecular compound coordinates with the four chloride ions around it to form the distorted triangular pyramid conformation ion [CdCl4] 2-, two anion [CdCl4] Cd] forms a five-coordinate dinuclear cadmium quaternary ring structure and forms two-dimensional network with two divalent cations of 2- (3-pyridyl) benzimidazole through electrostatic attraction, hydrogen bonding and π-π stacking Supramolecular compounds. Fluorescence test showed that the compound has good photoluminescence properties.