RESUMO
A novel two-dimensional (2D) ZnII coordination framework, poly[[µ-1,3-bis(2-methyl-1H-imidazol-1-yl)benzene](µ-5-nitrobenzene-1,3-dicarboxylato)zinc(II)], [Zn(C8H3NO6)(C14H14N4)]n or [Zn(NO2-BDC)(1,3-BMIB)]n [1,3-BMIB is 1,3-bis(2-methyl-1H-imidazol-1-yl)benzene and NO2-H2BDC is 5-nitrobenzene-1,3-dicarboxylic acid], has been prepared and characterized by IR, elemental analysis, thermal analysis and single-crystal X-ray diffraction. Single-crystal X-ray diffraction analysis revealed that the compound is a new 2D polymer with a 63 topology parallel to the (10-2) crystal planes based on left-handed helices, right-handed helical NO2-BDC-Zn chains and [Zn2(1,3-BMIB)2]n clusters. In the crystal, adjacent layers are further connected by C-H...O hydrogen bonds, C-H...π interactions, C-O...π interactions and N-O...π interactions to form a three-dimensional structure in the solid state. In addition, the compound exhibits strong fluorescence emissions in the solid state at room temperature.
RESUMO
A novel two-dimensional CdII coordination framework, poly[[[µ-1,3-bis(2-methyl-1H-imidazol-1-yl)benzene-κ2N:N'](µ-1,3-phenylenediacetato-κ4O,O':O'',O''')cadmium(II)] dihydrate], {[Cd(C10H8O4)(C14H14N4)]·2H2O}n or {[Cd(PDA)(1,3-BMIB)]·2H2O}n [1,3-BMIB is 1,3-bis(2-methyl-1H-imidazol-1-yl)benzene and H2PDA is 1,3-phenylenediacetic acid], has been prepared and characterized using IR, elemental analysis, thermal analysis and single-crystal X-ray diffraction, the latter revealing that the compound is a (4,4) grid coordination polymer with layers oriented parallel to the bc crystal planes. In the crystal, adjacent layers are further connected by O-H...O and C-H...O hydrogen bonds, forming a three-dimensional structure in the solid state. In addition, the compound exhibits strong fluorescence emissions and shows photocatalytic activity for the degradation of methylene blue in the solid state at room temperature.
