Etude par resonance magnetique nucleaire de l'azote 15 et du phosphore 31 d'amino-2 dimethyl-1,3 diaza-1,3 phospholanes-2

Abstract The 15 N and 31 P NMR study of 2-amino 1,3-dimethyl 1,3-diaza 2-phospholanes shows that the cyclic nitrogen atoms approach a pyramidal sp 3 structure and the exocyclic nitrogen atoms an sp 2 structure. A determination of the factors that govern δ 15 N and 1 J 31 P— 15 N is attempted.