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Isomerization and aggregation of 2-(2-(2-hydroxy-4-nitrophenyl)hydrazono)-1-phenylbutane-1,3-dione: Recent evidences from theory and experiment

  • Hristova, Silvia Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Sofia, Bulgaria
  • Kamounah, Fadhil S. Department of Chemistry, University of Copenhagen, Denmark - Department of Science and Environment, Roskilde University, Denmark
  • Crochet, Aurélien Department of Chemistry, University of Fribourg, Switzerland
  • Hansen, Poul Erik Department of Science and Environment, Roskilde University, Denmark
  • Fromm, Katharina M. Department of Chemistry, University of Fribourg, Switzerland
  • Nedeltcheva, Daniela Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Sofia, Bulgaria
  • Antonov, Liudmil Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Sofia, Bulgaria
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    01.06.2019
Published in:
  • Journal of Molecular Liquids. - 2019, vol. 283, p. 242–248
English The title compound potentially can exist as four isomers in solution. Recently Lycka has proposed a protocol for distinguishing two of them based on 15N NMR. This approach has been confirmed theoretically, in the current study, and further developed into a logical scheme that allows the existence of each of the isomers to be proven in solution. The experimental data, obtained by NMR and UV–Vis spectroscopy, have shown that the studied compound exists as a mixture of two solvent stabilized isomers in diluted solutions of dimethyl sulfoxide. However, the concentration effect also plays a substantial role allowing formation of linear aggregates as the X-ray analysis and theoretical calculations show.
Faculty
Faculté des sciences et de médecine
Department
Département de Chimie
Language
  • English
Classification
Chemistry
License
License undefined
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Persistent URL
https://folia.unifr.ch/unifr/documents/307978
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