| Autor: |
Fressigné C; Univ Rouen Normandie, INSA Rouen Normandie, CNRS, Normandie Univ, COBRA UMR 6014, INC3M FR 3038, F-76000 Rouen, France., Jean A; Univ Rouen Normandie, INSA Rouen Normandie, CNRS, Normandie Univ, COBRA UMR 6014, INC3M FR 3038, F-76000 Rouen, France.; LCMT, ENSICAEN et Université de Caen Basse-Normandie, CNRS, 6 bd du Maréchal Juin, 14050 Caen, France., Sanselme M; Univ Rouen Normandie, Normandie Univ, SMS, UR 3233, F-76000 Rouen, France., Blanchet J; LCMT, ENSICAEN et Université de Caen Basse-Normandie, CNRS, 6 bd du Maréchal Juin, 14050 Caen, France., Rouden J; LCMT, ENSICAEN et Université de Caen Basse-Normandie, CNRS, 6 bd du Maréchal Juin, 14050 Caen, France., Maddaluno J; Univ Rouen Normandie, INSA Rouen Normandie, CNRS, Normandie Univ, COBRA UMR 6014, INC3M FR 3038, F-76000 Rouen, France., De Paolis M; Univ Rouen Normandie, INSA Rouen Normandie, CNRS, Normandie Univ, COBRA UMR 6014, INC3M FR 3038, F-76000 Rouen, France. |
| Abstrakt: |
Cation-π interactions between various onium salts, alkynes, and acetylene were studied, taking into account the substituents of the triple bond, the nature of the anions, and the polarity of the solvent, through a combination of MP2 calculations and experiments. In an intramolecular setting, these data (including single-crystal X-ray crystallography) concurred with the stability of folded conformers of alkynyl onium salts, even substituted with electron-withdrawing groups. To examine the contribution of these interactions on the alkyne electronic population, a thorough in silico study was carried out using natural bonding orbital analysis of the conformers. Intramolecular interactions from sulfonium salt tethered to phenylalkyne were highlighted, as illustrated above by the computed folded conformation (MP2) along with noncovalent interaction (NCI) analysis. Furthermore, investigations of intermolecular interactions, involving acetylene or phenylacetylene with various onium ions, revealed the high energy interactions of their complexes with phenyldimethylsulfonium chloride, as illustrated above with the complex PhC≡CH/PhMe 2 SCl (MP2 calculations and NCI analysis). |
