Synthesis and Characterization of 1,3,2-Bis (arylamino) phospholidine, 2-oxide Derivatives: Crystal Structures of $rm Cl(O)overline{PN(p-Me-C_{6}H_{4})CH_{2}CH_{2}N}(p-Me-C_{6}H_{4})$ and $rm ((CH_{2}C_{6}H_{5})(O)overline{PN(p-Me-C_{6}H_{4})CH_{2}CH_{2}N}(p-Me-C_{6}H_{4})

Using phosphoryl chloride as a substrate, a family of 1,3,2‐bis(arylamino) phospholidine, 2‐oxide of the general formula $\rm (X)(O)\overline{PN(Ar)CH_{2}CH_{2}N}(Ar)$; (X=Cl, 6a; X=NMe2, 1b; X=N(CH2C6H5)(CH3), 2b; X=NHC(O)C6H5, 3b; X=4Me‐C6H4O, 4b; X=C6H5O, 5b; X=NHC6H11, 6b; X=OC4H8N, 7b; X=C5H10N, 8b; X=NH2, 9b; X=F, 10b and Ar=4Me‐C6H4) was prepared and characterized by 1H, 19F, 31P and 13C NMR and IR spectroscopy, and elemental analysis. A general and practical method for the synthesis of these compounds was selected. The structures of 6a and 2b were determined by single‐crystal X‐ray diffraction techniques. The low temperature NMR spectra of 2b revealed the restricted rotation of P‐N bond according to two independent molecules in crystalline lattice.