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Synthesis, structure and photoluminescence of three 2D Cd(II) coordination polymers based on varied dicarboxylate ligand

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Three coordination polymers (CPs) based on different dicarboxylic acids and Cd(II), [Cd3(tpa)3(DMA)4] (1), [Cd2(thpa)2(DMA)2·DMA] (2), and [Cd3(eba)3(DMA)] (3) (H2tpa = terephthalic acid, H2thpa = thiophenedicarboxylic acid, H2eba = (ethene-1,2-diyl)dibenzoic acid, DMA = N,N′-dimethylacetamide), were synthesized under solvothermal conditions. The CPs were characterized by elemental analysis (EA), single-crystal X-ray crystallography, powder X-ray diffraction, infrared spectroscopy (IR), and thermogravimetric analyses. X-ray crystallographic analysis shows that 1 and 3 exhibit a 2D six-connected hxl network based on hourglass-like [Cd3(COO)6] SBUs, whereas 2 displays a 2D 44-sql network based on [Cd4(COO)8] SBUs. Thermal stabilities and photoluminescence behaviors of the CPs are also discussed.
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Keywords: Cd(II); coordination polymer; dicarboxylic acid; photoluminescence

Document Type: Research Article

Affiliations: Key Lab for Colloid and Interface Chemistry of Education Ministry, School of Chemistry and Chemical Engineering, Shandong University, Jinan, PR China

Publication date: January 17, 2016

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