Structural Chemistry

, Volume 18, Issue 1, pp 59–63 | Cite as

Crystal structure and photoisomerism of 1-phenyl-3-methyl-4-benzal-5-pyrazolone 4-butylthiosemicarbazone in solid state

  • Junhua Wang
  • Lang Liu
  • Guangfei Liu
  • Li Zhang
  • Dianzeng Jia
Original Paper
First Online:
Received:
Accepted:

Abstract

The structure of 1-phenyl-3-methyl-4-benzal-5-pyrazolone 4-butylthiosemicarbazone (PMBP-BTSC) was confirmed by1H NMR, IR, elemental analyses, and X-ray crystallographic analysis. The photoisomerization of PMBP-BTSC in solid state was studied in the condition of UV-Vis irradiation, and the mechanism of the photoisomerization was interpreted by double proton transfer. Moreover, the effect of the alkyl chain length in the side chain of a series of 4-acyl pyrazolone derivatives on the photochemical properties was discussed.

Keywords

Photoisomerization Pyrazolone Proton transfer UV-Vis spectroscopy 
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Notes

Acknowledgements

This work was supported by the National Natural Science Foundation of China (Nos. 20462007 and 20366005) and the foundation for Scientific Research Program of the Higher Educational Institution of Xingjiang. (Nos. XJEDU2004G01 and XJEDU2004E01).

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Copyright information

© Springer Science+Business Media, LLC 2006

Authors and Affiliations

  • Junhua Wang
    • 1
  • Lang Liu
    • 1
  • Guangfei Liu
    • 1
  • Li Zhang
    • 1
  • Dianzeng Jia
    • 1
  1. 1.Institute of Applied ChemistryXinjiang UniversityUrumqi 830046People’s Republic of China

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