两个基于2-甲基-5-(2-吡啶基)-1,3,4-噁二唑的镉(Ⅱ)配位聚合物的合成、晶体结构及表征
Syntheses, Crystal Structures and Characterization of Two Polymeric Cadmium(Ⅱ) Complexes Based on 2-Methyl-5-(2-pyridyl)-1,3,4-oxadiazole
作者单位E-mail
孙爱晶 东南大学化学化工学院, 南京 211189  
卜德艳 东南大学化学化工学院, 南京 211189  
章慧 东南大学化学化工学院, 南京 211189  
王作祥 东南大学化学化工学院, 南京 211189 wangzx0908@aliyun.com 
摘要: 以2-甲基-5-(2-吡啶基)-1,3,4-噁二唑(L)为配体合成了2个镉(Ⅱ)配位聚合物:[Cd2(L)2μ-SCN)4]n1)和[Cd2(L)2μ-Cl)4]n2),测定了它们的单晶结构,并用紫外光谱、荧光光谱及热重分析进行了表征。配合物12分别属于三斜和单斜晶系,空间群分别为P1P21/n。配合物1是通过2个硫氰酸根负离子桥联形成的双桥镉(Ⅱ)配位聚合物,中心Cd1(Ⅱ)原子具有畸变的八面体构型[CdN4S2]。配合物2是通过2个氯离子桥联形成的双桥镉(Ⅱ)配位聚合物,中心镉(Ⅱ)原子具有畸变的八面体构型[CdCl4N2]。配合物12都具有荧光性质。
关键词: 1,3,4-噁二唑  合成  晶体结构  镉(Ⅱ)配合物  荧光
基金项目: 
Abstract: Two polymeric cadmium (Ⅱ) complexes derived from 2-methyl-5-(2-pyridyl)-1, 3, 4-oxadiazole (L), [Cd2(L)2(μ-SCN)4]n (1) and[Cd2(L)2(μ-Cl)4]n (2), were synthesized and characterized by single crystal X-ray diffraction, UV-visible spectra, fluorescence and thermogravimetric analysis (TGA). Complexes 1 and 2 crystallize in triclinic and monoclinic system, respectively. The space groups of complexes 1 and 2 are P1 and P21/n, respectively. Complex 1 is a double-bridged cadmium(Ⅱ) polymer bridged by two thiocyanate anions, and the central Cd1(Ⅱ) ions have distorted octahedral geometries[CdN4S2]. Complex 2 is a double-bridged cadmium(Ⅱ) polymer bridged by two chloride anions, and the central cadmium(Ⅱ) ions have distorted octahedral geometries[CdCl4N2]. Both complexes 1 and 2 have fluorescence properties.
Keywords: 1,3,4-oxadiazole  synthesis  crystal structure  cadmium(Ⅱ) complex  fluorescence
投稿时间:2020-02-02 修订日期:2020-06-06
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孙爱晶,卜德艳,章慧,王作祥.两个基于2-甲基-5-(2-吡啶基)-1,3,4-噁二唑的镉(Ⅱ)配位聚合物的合成、晶体结构及表征[J].无机化学学报,2020,36(10):1959-1966.
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