Abstract The reaction of MeOCH2CH2N (Me) SiMe3, Me2NCH2CH2OSiMe3, and Me2NCH2CH2N (Me) SiMe3 with PCl3. PhPCl2, and Ph2PCl was found to proceed with cleavage of the N [sbnd] Si or O [sbnd] Si bond and formation of the phosphorus (III) compounds, 3 to 8. In this series of, in part, novel phosphorus (III) compounds an intramolecular donor-acceptor interaction between NMe2 substituents and phosphorus ...