Hydrothermally reaction of Cd(NO₃)₂·4H₂O, pimelic acid (H₂Pim) mixed with two N-containing ligands of 1,2-bis(2-methyl-imidazol-1-ylmethyl)benzene (1,2-mbix) or 1,3-bis(2-methyl-imidazol-1-ylmethyl)benzene (1,3-mbix) gave rise to two new Cd(II) MOFs, [Cd(Pim)(1,2-mbix)] (1) and [Cd(Pim)(1,3-mbix)]·H₂O (2). Both MOFs were structurally characterized by IR and UV–Vis spectra, single-crystal and powder X-ray diffraction, thermogravimetric analyses. MOF 1 shows a fourfold interpenetrating dia network. Differently, MOF 2 shows a 2D → 3D interdigitated architecture base on the 6³ hcb layer when 1,2-mbix was replaced by 1,3-mbix. The luminescent properties of 1 and 2 have been investigated. Furthermore, the luminescent quenching experiments suggest both MOFs exhibit good selectivity and sensitivity to detect Fe³⁺ and Cr₂O₇²⁻ in water.

Cd（NO ₃）₂ ·4H ₂ O，庚二酸（H ₂ Pim）与两个1,2-双（2-甲基-咪唑-1-基甲基）苯的含氮配体混合（1,2 -mbix）或1,3-双（2-甲基-咪唑-1-基甲基）苯（1,3-mbix）生成了两个新的Cd（II）MOF，[Cd（Pim）（1,2-mbix） ）]（1）和[Cd（Pim）（1,3-mbix）]·H ₂ O（2）。两种MOF的结构特征均在于IR和UV-Vis光谱，单晶和粉末X射线衍射，热重分析。MOF 1显示了一个四重互穿的dia网络。与此不同，MOF 2在6的基础上显示了2D→3D叉指式架构 当将1,2-mbix替换为1,3-mbix时为³ hcb层。已经研究了1和2的发光特性。此外，发光猝灭实验表明，两种MOF都具有良好的选择性和灵敏度，可以检测水中的Fe ³⁺和Cr ₂ O ₇ ^2-。