MOLECULAR AND CRYSTALLINE-STRUCTURE OF THE ENOL FORM OF (DIMORPHOLINOPHOSPHORYL)CHLORO-ACETALDEHYDE AND (DIMORPHOLINOPHOSPHORYL)-DIBROMOMETHANE

The crystal and molecular structures of the products of the halogenati on of the dimorpholide of ethoxyvinylphosphonic acid were determined b y the method of x-ray structure analysis. It was established that (dim orpholinophosphoryl)chloroacetaldehyde only exists in the crystals as the Z-enol hydroxy-2-(dimorpholinophosphoryl)-2-chloroethene] with int ra- and intermolecular H-bonds (=CH...O=P and OH...O'= P). The (dimorp holinophosphoryl)dibromomethane forms centrosymmetric eight-membered c yclic dimers in the crystals due to intermolecular CH...O'= P' H-bonds . The structure of the morpholine and phosphoryl groups in both compou nds was discussed.