Hydrothermal syntheses and characterization of a series of mixed-ligand luminescent CdII frameworks with novel 2-(3-(pyridin-2-yl)-1H-pyrazol-1-yl) acetate ligand and benzenedicarboxylate isomers
作者： Hua Cai , Ying Guo , Jian-Gang Li
DOI: 10.1016/J.INOCHE.2013.05.003
关键词: Ligand 、 Luminescence 、 Structural motif 、 Stereochemistry 、 Hydrolysis 、 Crystallography 、 Chemistry 、 Fluorescence 、 Coordination polymer 、 Acetonitrile 、 Thermal analysis 、 Physical and Theoretical Chemistry 、 Inorganic chemistry 、 Materials Chemistry
摘要: Abstract Under similar hydrothermal synthetic conditions using a novel flexible ligand 2-(3-(pyridin-2-yl)-1H-pyrazol-1-yl)acetonitrile (PPAN), benzenedicarboxylate isomers (H2pa = phthalate, H2ip = isophthalate, and H2tp = terephthalate) Cadmium(II) acetate, three mixed-ligand Cd(II) coordination polymers {[Cd2(PPAA)2(μ-pa)(H2O)]·2H2O}n (1), {[Cd4(PPAA)4 (μ4-ip)2]·2H2O}n (2) {[Cd2(PPAA)2(μ-tp)]·2H2O}n (3) (PPAA− = 2-(3-(pyridin-2-yl)-1H-pyrazol-1-yl) acetate) have been isolated, in 1–3 PPAN, are also hydrolyzed into PPAA− ligand. Complex 1 is 1D polymer which the tetra-nuclear [Cd4(PPAA)4]4 + structural units extended by tri-dentate μ-pa2 − ligands. 2 contains binuclear [Cd2(PPAA)2]4 + units, four tetra-dentate μ4-ip2 − ligands to link eight neighboring ultimately forming 2D layered framework, while complex 3 double chain containing [Cd(PPAA)]n cation further tetradentate μ-tp2 − form new framework. All complexes investigated elemental analysis, FT-IR, thermal analysis fluorescence characterization. The modes of briefly analyzed. reveal great potential construction these luminescent frameworks with diverse motifs unique functional properties.
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