Facile Synthesis of Tuneable Azophosphonium Salts

Evi R.M. Habraken, Lars J.C. van der Zee, Koen N.A. van de Vrande, Andrew R. Jupp, Martin Nieger, Andreas W. Ehlers, J. Chris Slootweg*

*Corresponding author for this work

Research output: Contribution to JournalArticleAcademicpeer-review


Azophosphonium salts have a facile synthesis and can be readily tuned at the para position of the aryl group and at the phosphorus position with the use of bulky phosphines, leading to a range of coloured compounds. A relation between the Hammett σ + para constant and the colour and 31 P NMR chemical shift was explored. The compounds were characterised by NMR spectroscopy, UV/Vis spectroscopy and single-crystal X-ray structure crystallography.

Original languageEnglish
Pages (from-to)1594-1603
Number of pages10
JournalEuropean Journal of Inorganic Chemistry
Issue number11
Publication statusPublished - 31 Mar 2019
Externally publishedYes


  • Diazonium salts
  • Donor–acceptor systems
  • Dyes/Pigments
  • Lewis acids
  • Phosphines

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    Habraken, E. R. M., van der Zee, L. J. C., van de Vrande, K. N. A., Jupp, A. R., Nieger, M., Ehlers, A. W., & Slootweg, J. C. (2019). Facile Synthesis of Tuneable Azophosphonium Salts. European Journal of Inorganic Chemistry, 2019(11), 1594-1603. https://doi.org/10.1002/ejic.201801546