The layered perovskite compounds of the general formula [NH3(CH2)nNH3]PbI4 consist of layered PbI6 octahedra sandwitched between the alkyldiammonium layers. But the arrangement of PbI6 varies with alkyldiammonium ions incorporated. In order to investigate the possibility of controlling the arrangement,we prepared the compound with varied alkyldiammonium and determine the structures by X-ray diffraction method. It proved that compounds with n=4,6,8 have layered structures,while that with n=5 has a chain structure. |