Fluoren-9-one oxime

Bernhard Bugenhagen, Yosef Al Jasem, Mariam Al-Azani, Thies Thiemann

Research output: Contribution to journalArticlepeer-review


In the title molecule, C13H9NO, the fluorene system and the oxime group non-H atoms are essentially coplanar, with a maximum deviation from the fluorene mean plane of 0.079 (2) Å for the oxime O atom. A short intramolecular C - H⋯O generates an S(6) ring. In the crystal, molecules related by a twofold screw axis are connected by O - H⋯N hydrogen bonds, forming [100] chains Within these chains, molecules related by a unit translation along [100] show π-π stacking interactions between their fluorene ring systems with an interplanar distance of 3.347 (2) Å. The dihedral angle between the fluorene units of adjacent molecules along the helix is 88.40 (2)°. There is a short C - H⋯π contact between the fluorene groups belonging to neighbouring chains.

Original languageEnglish
Pages (from-to)o265
JournalActa Crystallographica Section E: Structure Reports Online
Issue number3
Publication statusPublished - Mar 2014


  • Data-to-parameter ratio = 13.9
  • Mean σ(C-C) = 0.002 Å
  • R factor = 0.029
  • Single-crystal X-ray study
  • T = 100 K
  • wR factor = 0.075

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics


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