The complexation of 2,4-dinitrophenol with basic drugs: Acid + base = salt

M. John Plater* (Corresponding Author), William T. A. Harrison

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)
33 Downloads (Pure)


Different drugs containing a basic nitrogen atom were crystallised with 2,4-dinitrophenol to study the mode of complexation in search of an antidote to 2,4-dinitrophenol poisoning. The protonated forms of quininium, quinidinium and trazodonium form N–H···O hydrogen bonds to the deprotonated O atom of the 2,4-dinitrophenolate anion, whereas haloperidolium forms a bifurcated N–H···(O,O) hydrogen bond to the deprotonated O atom of 2,4-dinitrophenol and an O atom of the adjacent nitro group. Hydrogen-bonded chains occur in the quininium, quinidinium and haloperidolium crystal structures, whereas the trazodonium structure consists of ion pairs. These results are discussed with a view to lowering the toxicity of 2,4-dinitrophenol in the body in the case of an overdose.
Original languageEnglish
Pages (from-to)281-286
Number of pages6
JournalJournal of Chemical Research
Issue number7-8
Early online date17 Jul 2019
Publication statusPublished - Jul 2019


  • 2,4-dinitrophenol
  • haloperidolium
  • quinidinium
  • quininium
  • trazodonium


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