کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1308782 | 1499152 | 2015 | 5 صفحه PDF | دانلود رایگان |
• Three 1D coordination polymers were synthesised and characterized.
• All compounds show fluorescent properties in the solid state.
• The divergence of structural motifs strongly influences on the fluorescent properties.
Three mixed-ligand coordination polymers based on cyanoacetate (cna) and 1,2-di(4-pyridyl)ethylene (dpe), namely [M(cna)2(dpe)]n (M = ZnII (1), (2), and CdII (3)) were synthesised and structurally characterized. Compound 1 exhibits a 1D zigzag polymeric chain, while compounds 2 and 3 are isostructural exhibiting 1D-ladder chain structures built from double-μ2-dpe connecting between [M2(μ1,3-cna)2(cna)2] secondary building units. The adjacent polymeric chains of 1–3 are linked by various intermolecular weak hydrogen bonds and N⋯π and/or C–H⋯π interactions through cyanoacetate and dpe ligands, stabilizing overall 3D supramolecular networks. Furthermore, the divergence of structural motifs between 1 and isostructures 2 and 3 strongly influences on their solid-state photoluminescent properties at room temperature. Compound 1 exhibits intense photoluminescence, whereas this is quenched in compounds 2 and 3.
The syntheses, crystal structures and luminescent properties of three novel mixed-ligand coordination polymers based on cyanoacetate (cna) and 1,2-di(4-pyridyl)ethylene (dpe), namely [M(cna)2(dpe)]n (M = ZnII (1), (2), and CdII (3)) have been studied.Figure optionsDownload as PowerPoint slide
Journal: Inorganica Chimica Acta - Volume 437, 1 October 2015, Pages 11–15