Chem. J. Chinese Universities ›› 1997, Vol. 18 ›› Issue (12): 1978.

• Articles • Previous Articles     Next Articles

Local Structural Disorder in the Organic Molecular Crystals

LU Yang1, WANG Shu-Chun2, ZHENG Qi-Tai1, LIU Wei3, LI Fang-Hua3   

  1. 1. Institute of Materia Medica, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing 100050;
    2. Shanxi Medical College for Proffessional Training, Xi'an 710068;
    3. Institute of Physics, Academia Sinica, Beijing 100080
  • Received:1996-10-23 Online:1997-12-24 Published:1997-12-24

Abstract: Five organic compounds were selected and their structures were determined by Xray diffraction.It was found that the disordered arrangement (occupying rate, position) existing in the partial atoms under the crystal 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 structures exist universally, which make it more difficult to determine the crystal structures correctly in three-dimensional space.

Key words: Crystal structure, Conformation difference, Structural disorder

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