Journal of Structural Chemistry

, Volume 46, Issue 1, pp 154–158 | Cite as

Molecular and crystal structure of 3-butoxy-4-(1,3,3-trimethyl-2,3-dihydro-1H-2-indolylidenemethyl)-3-cyclobutene-1,2-dione and its thio analog

  • S. V. Shishkina
  • V. N. Baumer
  • O. V. Shishkin
  • A. L. Tatarets
  • L. D. Patsenker
Article

Abstract

X-ray investigation of 3-butoxy-4-(1,3,3-trimethyl-2,3-dihydro-1H-2-indolylidenemethyl)-3-cyclobutene-1,2-dione and its thio analog has been carried out. Replacement of the carbonyl oxygen atom by a sulfur atom causes electron density delocalization and equalization of the C-C bonds between the four-and five-membered rings.

Keywords

squaraines conformation X-ray analysis 

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Copyright information

© Springer Science+Business Media, Inc. 2005

Authors and Affiliations

  • S. V. Shishkina
    • 1
  • V. N. Baumer
    • 1
  • O. V. Shishkin
    • 1
  • A. L. Tatarets
    • 2
  • L. D. Patsenker
    • 2
  1. 1.Institute of Scintillation MaterialsNational Academy of Sciences of UkraineKharkov
  2. 2.Institute of Single CrystalsNational Academy of Sciences of UkraineKharkov

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