Affiliations 

  • 1 X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
  • 2 School of Chemical Sciences, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
  • 3 Department of Chemistry, Shahjalal University of Science and Technology, Sylhet, 3114, Bangladesh
Acta Crystallogr E Crystallogr Commun, 2019 Jan 01;75(Pt 1):8-11.
PMID: 30713724 DOI: 10.1107/S2056989018016900

Abstract

A new polymorphic form of the title compound, C8H8O3, is described in the centrosymmetric monoclinic space group P21/c with Z' = 1 as compared to the first polymorph, which crystallizes with two conformers (Z' = 2) in the asymmetric unit in the same space group. In the crystal of the second polymorph, inversion dimers linked by O-H⋯O hydrogen bonds occur and these are linked into zigzag chains, propagating along the b-axis direction by C-H⋯O links. The crystal structure also features a weak π-π inter-action, with a centroid-to-centroid distance of 3.8018 (6) Å. The second polymorph of the title compound is less stable than the reported first polymorph, as indicated by its smaller calculated lattice energy.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.