Silver and copper-Supramolecular coordination polymers catalyzed alkyne–azide “Click” cycloadditions | ||||
| Delta Journal of Science | ||||
| Article 4, Volume 38, Issue 2, December 2017, Page 161-176 PDF (1.34 MB) | ||||
| Document Type: Research and Reference | ||||
| DOI: 10.21608/djs.2017.139441 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| SafaaEldin H. Etaiw; Ibrahim Salem; Alaa Tawfik | ||||
| Department of Chemistry, Faculty of Science, University of Tanta, 31527-Tanta, Egypt | ||||
| Abstract | ||||
| Two3D-supramolecular coordination polymers (SCP); {[SnMe3(bpe)] [Ag(CN)2].2H2O}, 1 and {[CuI(CN2(phen)CuII(CN)2(phen)].5H2O}, 2 have been synthesized and characterized by physicochemical and spectroscopic methods. The structure of 1 consists of cationic {-Sn(Me3)-bpe-} chains that are neutralized by [Ag(CN)2]- anions. The dicyanoargentate anions present discrete uncoordinated fragments between the cationic chains. The water molecules bind the cationic chains and the anions forming 3D-supramolecular structure through hydrogen bonds. The most intriguing feature in the structure of 2 is the unusual supramolecular interactions, including hydrogen bonds which involve the terminal cyanide and the phenanthroline (phen) ligands and π–π stacking which generate a unique 3D-supramolecular architecture in the solid state. The SCP 1 and2 exhibit good catalytic activity for the formation of substituted triazoles. In this case, the SCP 1 and 2-catalyzed alkyne–azidecycloaddition provide 1,4-disubstituted1,2,3-triazoles with such efficiency and scope that the transformation has been described as “click” chemistry. | ||||
| Keywords | ||||
| click reaction; Cupper; Silver; supramolecular polymers; Catalysis | ||||
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