Donor-Stabilized Dioxophosphonium Cation: Synthesis, Hydrolysis and Crystal Structure of [(DMAP)2PO2]Cl.CH3CN
| Authors | |
|---|---|
| Year of publication | 2002 |
| Type | Article in Proceedings |
| Conference | Sborník příspěvků IV. seminář Pokroky v anorganické chemii |
| MU Faculty or unit | |
| Citation | |
| Field | Inorganic chemistry |
| Keywords | Cations; donor-acceptor complexes; N-ligands; dioxophosphonium; crystal structures |
| Description | The reaction of POCl3 with strong basic 4-dimethylaminopyridine /DMAP/ in liquid SO2 produces a white solid that could be recrystallized from acetonitrile. The single-crystal structure determination revealed an ionic structure of bis(4-dimethylaminopyridine)dioxophosphonium chloride solvated by one molecule of acetonitrile.It can be considered a salt of donor-stabilised PO2+ ion,an hitherto unknown analogue of the nitronium cation,NO2+. A 31P NMR spectroscopic study showed a significant difference between the acid and alkali hydrolysis of [(DMAP)2PO2]+ ion and enabled to propose the corresponding reaction mechanism. |
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