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), X = C6H5C(O)NH, Cl a

摘要

Some new phosphoramidates with the 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 and characterized by IR, H-1, C-13, P-31 NMR spectroscopy and elemental analysis. The structures have been determined for compounds 1-3. Compounds 1 and 3 were obtained in the form of centrosymmetric dimers which were produced by intermolecular -P=(OH)-H-...-N- hydrogen bonds. In molecules 1-5, containing carbon atoms with two bond distances from the phosphorus atoms, (2)J(P,CH2) > (2)J(P,CH3). (c) 2005 Elsevier Ltd. All rights reserved.