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Synthesis and characterization of a stable copper (I) calix[4]dicyano-diimidazole complex |
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| Authors: | Sebastien NoelHui Ren,Tao TuErwann Jeanneau,Caroline Fé lixFlorent Perret,Francis VocansonChristophe Bucher,Guy RoyalIsabelle Bonnamour,Ulrich Darbost |
| Affiliation: | a Université de Lyon, Lyon, Université Lyon 1, Villeurbanne, CNRS, UMR5246, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, CSAp, 43 Boulevard du 11 Novembre 1918, F-69622 Villeurbanne, France b Department of Chemistry, Fudan University, 220 Handan Road, 200433 Shanghai, China c Université de Lyon, Université de Saint-Etienne, CNRS UMR 5516, Laboratoire Hubert Curien, France, F-42000, Saint-Etienne, France d Département de Chimie Moléculaire, Laboratoire de Chimie Inorganique Rédox, (DCM-CIRE-UMR CNRS/UJF 5250), Université Joseph Fourier, BP-53, 38041 Grenoble Cedex 9, France |
| Abstract: | A new calix[4]dicyano-diimidazole ligand was prepared in two steps from a de-tert-butylated calix[4]arene. The corresponding Cu (I) complex was found to be remarkably stable. The X-ray structure of the latter revealed a mixture of both monomeric-mononuclear and dimeric-dinuclear complexes. Detailed investigations on this copper complex, involving NMR (VT and DOSY), Infra-red, and MS analyses, demonstrated that the dimeric-dinuclear complexe does not exist in solution. Despite the presence of two cyano binding groups on the calixarene platform, every attempts to isolate a stable Cu(II) complex failed. |
| Keywords: | Calixarene Copper(I) X-ray structure Synthesis |
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