Etude de quelques composés cycliques polyfonctionnels renfermant le motif CO_N_CO et de leurs dérivés phosphorylés. Liaisons hydrogène et spectres infrarouge

The spectra of compounds containing a phosphoryl bond (P → O) and a heterocyclic ring containing the O  CNC  O system (phthalimide or hydantoin derivatives) have been studied both in the solid state and in various solvents. The spectra of the non phosphorus containing parent compounds are described for comparison. Several type of interactions occur: P → O … CO dipole interaction, NH … OC and NH … O ← P hydrogen bonding. The latter are dependent upon the nature of substituents linked to the phosphorus atom and on the steric requirements of the phosphorus moeity and of the heterocycle.