title: Synthesis, structure, luminescence and catalytic properties of cadmium(ii) coordination polymers with 9H-carbazole-2,7-dicarboxylic acid.
abstract: Two Cd(ii) metal-organic frameworks were synthesized from the NH-functionalized dicarboxylate ligand 9H-carbazole-2,7-dicarboxylic acid (2,7-H2CDC). Compound , [Cd4(CDC)4(DMF)4]·4DMF·4H2O, displays 2D square grid networks based on novel tetranuclear [Cd4(COO)8] secondary building units (SBUs) and pairwise CDC(2-) linkers. Compound , (H3O)2[Cd3(2,7-CDC)4]·3DMF·4H2O, is also based on 4-connected SBUs and pairwise CDC linkers, but the unusual trinuclear [Cd3(COO)8] SBUs lead to 2-fold interpenetrated 3D diamond-type frameworks with guest accessible voids. Both compounds display strong blue fluorescence in the solid state, and compound shows high catalytic activity for Knoevenagel condensation.
authors.affiliation: Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, Shanghai 200062, P.R. China. eqgao@chem.ecnu.edu.cn.
authors.forename: Xiu-Chun
authors.initials: XC
authors.lastname: Yi
authors.forename: Meng-Xuan
authors.initials: MX
authors.lastname: Huang
authors.forename: Yan
authors.initials: Y
authors.lastname: Qi
authors.forename: En-Qing
authors.initials: EQ
authors.lastname: Gao