Redetermination of cyclo-trimethylene-trinitramine

Patrick Hakey, Wayne Ouellette, Jon Zubieta, Timothy Korter

Research output: Contribution to journalArticlepeer-review

75 Scopus citations


The redetermined structure of 1,3,5-trinitro-1,3,5-triaza-cyclo-hexane, C3H6N6O6, at 90 (2) K has ortho-rhom-bic (Pbca) symmetry. It is of inter-est with respect to energetic compounds. The structure was originally investigated through X-ray diffraction by Hultgren [(1936). J. Chem. Phys. 4, 84]. Later X-ray investigations were completed by McCrone [(1950). Anal. Chem. 22, 954-955] and Harris, Reed & Gluyas [(1959). AFOSR-TR-59-165 Ohio State University Research Foundation, Columbus, Ohio, USA]. A single-crystal neutron diffraction study was performed by Choi & Prince [(1972). Acta Cryst. B28, 2857-2862] to ascertain the H-atom positions, which had not been defined by the earlier X-ray diffraction studies. All previous studies were performed at or near room temperature. The structure provided is the polymorph of the title compound. The ring atoms are arranged in the chair conformation with two nitro groups occupying pseudo-equatorial positions and the remaining nitro group is axial. The crystal packing is stabilized by close intramolecular interactions from one H atom in each methylene group to O atoms of adjacent nitro groups, ranging from 2.251 to 2.593 Å.

Original languageEnglish (US)
Pages (from-to)o1428
JournalActa Crystallographica Section E: Structure Reports Online
Issue number8
StatePublished - 2008

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics


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