Am. Modro et al., PHOSPHORIC AMIDES - N-15 NMR-STUDY OF THE P-N BONDING IN ACYCLIC AND CYCLIC-COMPOUNDS, Magnetic resonance in chemistry, 35(11), 1997, pp. 774-777
P-31 and N-15 NMR spectra of 11 cyclic and non-cyclic phosphoramidates
were measured. Comparison of the closely related structures demonstra
ted correlation between the bond angles at nitrogen and the N-15 NMR c
hemical shifts and the (1)J(P,N) coupling constants. N-15 NMR paramete
rs allowed the exo- and endocyclic nitrogens to be distinguished and c
ould be related to the hydrolytic stability of the P-N bonds. (C) 1997
John Wiley & Sons, Ltd.