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：孙爱晶 卜德艳 章慧 王作祥[1] SUN Ai-Jing;BU De-Yan;ZHANG Hui;WANG Zuo-Xiang(School of Chemistry and Chemical Engineering,Southeast University,Nanjing 211189,China)

机构地区：[1]东南大学化学化工学院,南京211189

出　　处：《无机化学学报》2020年第10期1959-1966,共8页Chinese Journal of Inorganic Chemistry

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)2(μ-SCN)4]n (1)和[Cd2(L)2(μ-Cl)4]n (2),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1和2分别属于三斜和单斜晶系,空间群分别为P1和P21/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1和2都具有荧光性质。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 diffrac-tion, UV-visible spectra, fluorescence and thermogravimetric analysis(TGA). Complexes1 and2 crystallize in tri-clinic and monoclinic system, respectively. The space groups of complexes1 and2 are P1 and P21/n, respectively.Complex1 is a double-bridged cadmium(Ⅱ) polymer bridged by two thiocyanate anions, and the central Cd1(Ⅱ) ionshave distorted octahedral geometries [Cd N4 S2]. Complex2 is a double-bridged cadmium(Ⅱ) polymer bridged by twochloride anions, and the central cadmium(Ⅱ) ions have distorted octahedral geometries [Cd Cl4N2]. Both complexes1 and2 have fluorescence properties. CCDC: 1945282,1;1945285,2.

关 键 词：1 3 4-噁二唑 合成 晶体结构 镉(Ⅱ)配合物 荧光 

分 类 号：O614.242[理学—无机化学]