Application des spectrographies RMN 13C et 1H a l'etude de derives cycliques du silicium et germanium,interactions pπdπ |
| |
| Authors: | ML Filleux-Blanchard Nguyen-Dinh An G Manuel |
| |
| Institution: | Laboratoire de Chimie Organique Physique, E.R.A. no. 315, 38 Boulevard Michelet, 44037 Nantes Cédex France;Laboratoire de Chimie Organique, Faculté des Sciences et des Techniques, 25030 Besançon Cédex France;Laboratoire des Organométalliques, Université Paul Sabatier, 118 route de Narbonne, 31077 Toulouse Cédex France |
| |
| Abstract: | The properties of 1-sila- and 1-gemma-cyclopent-2-(or -3-)enes with various substituents have been investigated by 13C and 1H NMR spectroscopies. Values of chemical shifts and coupling constants in olefinic cyclic systems and in aromatic or ethylenic substituents attached to the hereto atom suggest the presence of a mesomeric pπdπ interaction, particularly for the silicon atom. Studies at low temperatures given conformational data, which have been compared with data from the literature. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
