物理化学学报 >> 1992, Vol. 8 >> Issue (04): 545-549.doi: 10.3866/PKU.WHXB19920424

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1,2-二甲基-3-吲哚甲叉(异丙叉)丁二酸酐(1)和1,2-二甲基-3-吲哚乙叉(异丙叉)丁二酸酐(2)的晶体结构

范广裕; 王焕忠; 崔秀山; 李云政; 朱鹤孙   

  1. 北京理工大学化工与材料学院,北京 100081
  • 收稿日期:1991-03-22 修回日期:1991-10-08 发布日期:1992-08-15
  • 通讯作者: 范广裕

Crystal Structures of 1,2-Dimethyl-3-Indolmethyl-Idene Succinic Fulgide Anhydride and 1,2-Dimethyl-3-Indolylethylidene Succinic Fulgide Anhydride

Fan Guang-Yu; Wang Huan-Zhong; Cui Xiu-Shan; Li Yun-Zheng; Zhu He-Sun   

  1. Department of Chemical Engineering, Beijing Institute of Technology, Beijing 100081
  • Received:1991-03-22 Revised:1991-10-08 Published:1992-08-15
  • Contact: Fan Guang-Yu

关键词: 俘精酸, 晶体结构, 光化学性质

Abstract: The crystal structures of 1,2-dimethyl-3-indolylmethylidene succinic fulgide anhydride (1) and 1,2-dimethyl-3-indolylethylidene succinic fulgide anhydride(2) were determined by singe crystal X-ray diffraction analysis. The crystal data are C_(18)H_(17)NO_3(1), orthogonal space group Pbca, with a=1.0084(3) nm, b=1.3966(4) nm, c=2.0945(6) nm, V=2.9498(15) nm, Z=8; C_(19)H_(19)NO_3 (2), orthogonal space group Pbca, with a=0.7988(3) nm, b=2.5782(10) nm, c=1.5664(5) nm, V=3.2259(22) nm, Z=8. R values are 0. 047 for (1) and 0.059 for (2) respectively.
The photochemical properties of (1) and (2) were reported. Compound (1) is nonphotochromic, compound (2) changed from pale yellow to blue or green on irradiation at 365 nm or on exposure to indoor UV light either in crystal state or in solution (liquid or rigid plastic matrix).
The differences in photochromic properties of compound (1) and (2) were discussed.

Key words: Crystal structure, Photochromic properties, Fulgide anhydride, X-ray diffraction