Preparation and Crystalline Structure of Dihydrate of hemi-(Diazonium-18-crown-6) Isocyanurate of Isocyanuric Acid

摘要

Crystalline dihydrate of hemi-(diazonium-18-crown-6) isocyanurate of isocyanuric acid,0.5[H_2DA18K6]~(2+).(C_3H_2N_3O_3)~- centre dot C_3H_3N_3O_3 centre dot 2H_2O,was prepared and investigated by X-ray crystallography.In the given structure the dication DA18K6 is center-symmetric and possesses crown conformation of approximate D_(3h) symmetry.Molecule of isocyanuric acid and its anion are nearly planer.This molecule possesses approximate D_(3h) symmetry and its anion possesses approximate C_(2v) symmetry.With sufficient precision were determined geometrical parameters (bond lengths,bond angles etc.) of ions and molecules and was determined their packing in the given crystalline structure in which there is developed system of inter-molecular (interion) hydrogen bonds.