The effect of various substituents on the structural parameters of the P(O)[N(CH3)(CH2C6H5)]2 moiety. Syntheses and spectroscopic characterization of some new phosphoramidates, crystal structures of P(O)(X)[N(CH3)(CH2C6H5)]2, XÂ =Â C6H5C(O)NH, Cl and CCl3

Some new phosphoramidates with general formula P(O)(X)[N(CH3)(CH2C6H5)]2, X = C6H5C(O)NH (1), Cl (2), CCl3C(O)NH (3), N(CH3)2 (4) and 4-NO2-C6H4NH (5) were prepared. The structures of 1 and 3 show centrosymmetric dimmers in crystalline lattice. 13C NMR spectra indicated that 2J(P,C)benzylic > 2J(P,C)methyl for these compounds.