Acridine form IX

Peter W. Stephens, Einat Schur, Saul H. Lapidus, Joel Bernstein

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


We report a new polymorph of acridine, C13H9N, denoted form IX, obtained as thin needles by slow evaporation of a toluene solution. The structure was solved and refined from powder X-ray data. The structures of five unsolvated forms were previously known, but this is only the second with one molecule in the asymmetric unit. The melting point [differential scanning calorimetry (DSC) onset] and heat of fusion are 108.8 (3) °C and 19.2 (4) kJ mol -1 , respectively.

Original languageEnglish
Pages (from-to)489-491
Number of pages3
JournalActa Crystallographica Section E: Crystallographic Communications
Issue number4
StatePublished - 1 Jan 2019


  • acridine
  • crystal structure
  • polymorph.
  • powder diffraction

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics


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