Acta Phys. -Chim. Sin. ›› 1990, Vol. 6 ›› Issue (02): 224-228.doi: 10.3866/PKU.WHXB19900218

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Crystal Structures of 1-Methyl-3-Indolmethy-Lidene (Isopropylidene) Succinic Anhydride (I) and 1-Methyl-3-Indolethylidene (Isopropylidene) Succinic Anhydride(II)

Liu Zuo-Cai; Cui Xiu-Shan; Fan Guang-Yu; Deng Bai-Ming; Wang Huan-Zhong; Li Yun-Zheng   

  1. Department of Chemical Engineering, Beijing Institute of Technology, Beijing
  • Received:1988-06-13 Revised:1989-01-17 Published:1990-04-15
  • Contact: Liu Zuo-Cai

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Abstract: The crystal structures of the title compound (Ⅰ) and (Ⅱ) have been determined by X-ray diffraction. Crystal data are: C_(17)H_(15)NO_3(Ⅰ), triclinic, α=0.7308(2) nm, b=0.8845(3) nm, c=1.1323(3) nm, α=100.03(2)°, β=104.81(2)°, γ=97.20(2)°, V=0.6856(3) nm, Z=2, R=0.047 and C_(18)H_(17)NO_3(Ⅱ), monoclinic, a=1.1006(3) nm, b=1.1172(2) nm, c=1.4046(3) nm, β=102.78(2)°, V=1.5337(6) nm, Z=4, R=0.055. The molecular conformation is cis form for compound Ⅰ and trans form for compound(Ⅱ).