The C form of n-hexadecanoic acid

Acta Crystallogr C. 2006 Mar;62(Pt 3):o129-31. doi: 10.1107/S0108270106003106. Epub 2006 Feb 11.


In the crystal structure of the title compound, C16H32O2, the molecules are arranged into dimers through O-H...O hydrogen bonds. These dimers are packed in bilayers with terminal methyl groups at both external faces, and these layers are parallel to the crystallographic (100) plane. All C-C bonds of the alkyl chain show an antiperiplanar (trans) conformation, with slight deviations from the ideal value in the C-C bonds close to the intermolecular hydrogen bonds. The similarity between the carboxyl C-O bond distances is consistent with the existence of cis-trans tautomerism.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Crystallography, X-Ray
  • Palmitic Acid / chemistry*


  • Palmitic Acid