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利用过渡金属镉(锌)盐与1,4-二(4-甲基咪唑)苯、间苯二甲酸分别采用分层和水热法合成了化合物{[Cd(BMIB)(H_2O)2](NO3)2}n(1)和{[Zn2(BMIB)1.5(OH)(IP)1.5]·H_2O}n(2)(BMIB=1,4-二(4-甲基咪唑)苯,IP2-=间苯二甲酸根),并对其进行了元素分析、IR及X射线衍射法表征。晶体结构研究表明:配合物1属于三斜晶系,P1空间群。晶胞参数:a=0.382 08(3)nm,b=0.904 72(7)nm,c=1.378 29(10)nm,α=98.581(4)°,β=97.020(3)°,γ=94.398(3)°。配合物2属于单斜晶系,C2/c空间群。晶胞参数:a=3.764 07(9)nm,b=1.017 18(5)nm,c=2.015 31(11)nm,β=120.860(2)°。配合物1是由配体BMIB连接镉离子形成一维链状结构,由氢键连接成二维层结构。而配合物2是由配体IP2-连接锌离子形成一维梯状结构,该一维梯通过羟基和BMIB连接成三维网络结构。此外,配合物1和2具有较好的荧光性能。
The compounds {[Cd (BMIB) (H 2 O) 2] (H 2 O) 2 were synthesized by the method of stratification and hydrothermal method using transition metal cadmium (zinc) (BMIB = 1,4-bis (4-methylimidazolium) benzene, IP2-NO3) 2} n 1 and {Zn2 BMIB 1.5 (OH) (IP) 1.5] = Isophthalate), and its elemental analysis, IR and X-ray diffraction characterization. Crystal structure studies show that: complex 1 belongs to the triclinic system, space group P1. Cell parameters: a = 0.382 08 (3) nm, b = 0.904 72 (7) nm, c = 1.378 29 10 nm, α = 98.581 (4) °, β = 97.020 (3) °, γ = 94.398 (3) °. Complex 2 belongs to monoclinic system, C2 / c space group. Cell parameters: a = 3.764 07 (9) nm, b = 1.017 18 (5) nm, c = 2.015 31 (11) nm, β = 120.860 (2) °. The complex 1 is formed by connecting the BMIB ligand with cadmium ions to form a one-dimensional chain structure, which is connected by a hydrogen bond into a two-dimensional layer structure. The complex 2 is formed by the ligand IP2-zinc ions to form a one-dimensional ladder structure, the one-dimensional ladder through the hydroxyl and BMIB connected into a three-dimensional network structure. In addition, complexes 1 and 2 have better fluorescence properties.