Synthesis, structure and dielectric deuterated effect of a novel organic–inorganic hybrid compound

One novel organic–inorganic hybrid compound, (EB-NH3+)(18-crown-6)·H2PO4−·2H3PO4·2.5H2O (1) (EB-NH3+ = 4-ethoxybenzenammonium; 18-crown-6 = 1,4,7,10,13,16-hexaoxacyclo-octadecane), has been synthesized and characterized by powder X-ray, IR, thermogravimetric analysis and single X-ray structure analysis. In the structure of complex 1 the organic (EB-NH3+)(18-crown-6) supermolecular cation sheet and inorganic phosphate anion sheet arrange alternately. Compound 1 and its deuterium product 2 display excellent dielectric property with a huge dielectric permittivity deuterated effect (DEF) of 1649% (200 Hz, 300 K).