Flash Vacuum Thermolysis: First Gas-Phase Generation of Unhindered Silylidenephosphanes and Characterization by Photoelectron Spectroscopy
| Autor: | Jean-Louis Ripoll, Valérie Lefèvre, V. Metail, A. Chrostowska-Senio, S. Joanteguy, G. Pfister-Guillouzo, Yves Dat |
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| Přispěvatelé: | Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux (IPREM), Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 1997 |
| Předmět: |
[CHIM.ORGA]Chemical Sciences/Organic chemistry
010405 organic chemistry Chemistry Organic Chemistry Thermal decomposition [CHIM.INOR]Chemical Sciences/Inorganic chemistry 010402 general chemistry Photochemistry 01 natural sciences 0104 chemical sciences Characterization (materials science) Gas phase Inorganic Chemistry Flash (photography) X-ray photoelectron spectroscopy Physical and Theoretical Chemistry |
| Zdroj: | Organometallics Organometallics, American Chemical Society, 1997, 16 (8), pp.1635--1640 HAL |
| ISSN: | 1520-6041 0276-7333 |
| DOI: | 10.1021/om960914n |
| Popis: | International audience; The flash vacuum thermolysis of cyclodisilaphosphanes, cyclotrisilaphosphanes, and a phosphasilacyclobutane, potential precursors of unhindered silylidenephosphanes (R2Si=PR′), has been investigated by NMR as well as by coupling with HRMS and, particularly, photoelectron spectroscopy. This last technique led us to characterize for the first time, in the gas phase, two very reactive species of this series, the P-tert-butyl- and P-phenyl-(dimethylsilylidene)phosphanes (Me2Si=P-t-Bu and Me2Si=PPh). The first ionization potentials at weaker energy are associated with the ejection of an electron from the πSi=P bond. The ionizations of the lone pair on phosphorus are observed at higher energy. |
| Databáze: | OpenAIRE |
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