UTILIZATION AND MODIFICATION OF PEROVSKITE-TYPE LAYERED STRUCTURES ASINORGANIC-ORGANIC HYBRID MATERIALS

The aromatic ammonium-based layered halide compounds were obtained of bis(4-nitroanilinium)tetrachlorocadmate and bis(2-methyl-4-nitroanilin ium) tetrachlorocadmate, aiming at a new type of inorganic-organic hyb rid layered material. X-ray diffraction analyses of the single crystal s revealed that both of the crystals take an alternate layered structu re of the organic bilayer and the inorganic sheet. Cadmium ion and chl oride anions form six-coordinated octahedra whose corner anions are sh ared with the neighboring octahedra for the crystal of bis(4-nitroanil inium)tetrachlorocadmate In the case of bis(2-methyl-4-nitroanilinium) tetrachlorocadmate crystal the inorganic portion takes distorted four -coordinated tetrahedra. The structure of the inorganic portion for th e latter crystal can be considered to be caused by the distortion of a perovskite-type octahedron due to the introduction of a bulky organic molecule.