CJCU

Chem. J. Chinese Universities ›› 2006, Vol. 27 ›› Issue (1): 58.

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Studies on Topological Isomers(Ⅰ)Spectrum Properties and Structure Identification of C-Shaped and
S-Shaped Topological Isomers

ZHOU Bao-Han 1,  YIN Guo-Dong1,  LIU Xiao-Peng1,  WU An-Xin 1,2*   

  1. 1. Key Lab of Pesticide ＆ Chemical Biology, Ministry of Education, Department of Chemistry, Central China Normal University,  Wuhan  430079, China;
    2. State Key Lab of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
  • Received:2005-05-08 Online:2006-01-10 Published:2006-01-10
  • Contact: WU An-Xin, E-mail: chwuax@mail.ccnu.edu.cn

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Abstract:

With the development of the supramolecular chemistry, a type of novel stereoisomers with the same chemical formula and connectivity but different folding shapes has been found. These topological stereoisomer have different three-dimension structures which result in its different functions in molecular recognition, assembly and aggregation. In this paper we reported four synthesized topological isomers whose chemical configurations were characterized by means of 1H NMR, 13C NMR, IR, UV and SEM. It is found that the topological configuration of C-shaped and S-shaped molecules can be identified by 1H NMR, and the topological isomers of S-shaped cis(SC)and trans(ST); C\|shaped cis(CC)and trans(CT)can be identified by 13C NMR. There is little difference in IR, UV and SEM of the four isomers.

Key words: Synthesis; Topological isomers; Structure analysis; Spectrum property

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