INTERACTION OF P(III) COMPOUNDS WITH SILYL HALIDES. THE MECHANISM OF THE REACTION OF PHOSPHOROUS TRIAMIDES WITH TRIALKYLSILYL HALIDES

Article abstract of DOI:10.1016/S0040-4020(01)96642-6

The reaction of phosphorous hexamethyltriamide with trimethylsilyl iodide or bromide provides a convenient synthesis of the corresponding N,N,N',N'-tetramethylphosphorodiamidous halide.Low temperature (31)P NMR studies gave evidence of the formation of a phosphonium salt-type complex with direct P-Si bonding in the first step of the reaction. Analogous phosphonium salt intermediates involving P-P bonds were found to be involved in some ligand exchange process between two tricoordinated phosphorus species.