کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1336634 | 1500236 | 2016 | 8 صفحه PDF | دانلود رایگان |
Four homochiral dinuclear complexes, namely, [Ag2(LC4)2](OTf)2 (1), [Ag2(LC4)2](ClO4)2 (2), [Ag2(LC5)2](OTf)2 (3), [Ag2(LC5)2](PF6)2 (4) have been successfully synthesized from subcomponent self-assembly of imidazole-2-carboxaldehyde derivatives, R-phenylethylamine and silver salt. LC4 and LC5 were flexible ligands, containing the same imidazole Schiff-bases coordination motif and varying in alkyl chain lengths with four and five carbon atom, respectively. Single crystal structures revealed that the silver(I) center in 1–4 coordinated with 4 N donor atoms from two symmetrical chiral ligands assuming Δ configuration with a tetrahedral coordination environment. [Ag2(LCn)2]2+ components all presented double helical structures exhibiting only P-handedness with Ag–Ag, π–π, and C–H⋯π intramolecular interactions. Highly selective narcissistic self-sorting behavior can be observed during the self-assembly of 1 and 3.
Four novel homochiral dinuclear Ag(I) complexes have been successfully synthesized by subcomponent self-assembly. Highly selective narcissistic self-sorting behavior was observed in the self-assembly process of the Ag helicates from a mixture of similar components that only alkyl chain different. This was confirmed by overlaying the 1H NMR of the mixture with the individually synthesized chiral helicates.Figure optionsDownload as PowerPoint slide
Journal: Polyhedron - Volume 104, 28 January 2016, Pages 9–16