LOCAL STRUCTURAL DISORDER IN THE ORGANIC MOLECULAR-CRYSTALS

Five organic compounds were selected and their structures were determi ned by Xray diffraction. It was found that the disordered arrangement (occupying rate, position) existing in the partial atoms under the cry stal state leads to the exchange in the molecular conformation, and by means of X-ray diffraction analysis, the average molecular structures are obtained. The disorder phenomena in the organic crystal structure s exist universally, which make it more difficult to determine the cry stal structures correctly in three-dimensional space.