Three CdII complexes based on 2-(1H-imidazol-1-methyl)-1H-benzimidazole and homologous aliphatic dicarboxylates

• CdII complexes based on 2-(1H-imidazol-1-methyl)-1H-benzimidazole and aliphatic dicarboxylate ligands.
• Diverse architectures and topological networks of the complexes.
• Aliphatic dicarboxylate ligands exert regulating effects on the structural features.
• The complexes are characterized by IR, luminescence and TGA techniques.

Three cadmium complexes incorporating both aliphatic α,ω-dicarboxylate and 2-(1H-imidazol-1-methyl)-1H-benzimidazole (imb) have been prepared and structurally characterized. [Cd2Cl2(suc)(imb)2(H2O)]n (1) manifests 2D layered structure built from the linkage of tetranuclear [Cd4Cl4(suc)2(H2O)2] units through two kinds of imb ligands. {[Cd(glu)(imb)]·H2O}n (2) contains ladderlike [Cd(glu)]n chains which are bridged by imb ligands to form the 2D layers. {[Cd2Cl2(adi)(imb)2]·2H2O}n (3) also displays 2D network in which dinuclear units [Cd2Cl2] were linked by imb ligands to form double-stranded chains and these chains were further linked by adi2− ligands. Results indicate that aliphatic dicarboxylate ligands play an important role in governing the formation of final frameworks. Additionally, IR spectra, PXRD patterns, TG analyses and fluorescent properties of certain complexes have been determined.

Three new CdII complexes with the formulas [Cd2Cl2(suc)(imb)2(H2O)]n (1), {[Cd(glu)(imb)]·H2O}n (2) and {[Cd2Cl2(adi)(imb)2]·2H2O}n (3) were synthesized and structurally characterized by single-crystal X-ray diffraction. Dicarboxylate coligands play an important role in tuning the detailed structure and characters of the complexes. IR spectra, PXRD patterns, TG analyses and fluorescent properties of certain complexes have also been investigated.Figure optionsDownload as PowerPoint slide