3,3'-[(1RS,3SR)-2-oxocyclohexane-1,3-diyl]bis[(3RS,3'SR)-3-hydroxyindolin-2-one] dihydrate: organic layers of R2(2)(8), R2(2)(16) and R6(6)(40) rings linked by tetrameric water aggregates

Acta Crystallogr C. 2013 Sep;69(Pt 9):1081-4. doi: 10.1107/S0108270113020908. Epub 2013 Aug 21.

Abstract

The organic component of the title compound, C22H20N2O5·2H2O, exhibits approximate but noncrystallographic mirror symmetry. The molecules of the organic component are linked by a combination of one O-H...O hydrogen bond and two N-H···O hydrogen bonds to form sheets containing R2(2)(8), R2(2)(16) and R6(6)(40) rings. These sheets are linked into a continuous three-dimensional framework structure by cyclic centrosymmetric R4(2)(8) water tetramers. Comparisons are made with some simpler analogues.

Keywords: crystal structure; cyclic water tetramers; hydrogen bonding.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Crystallography, X-Ray*
  • Hydrogen Bonding
  • Imidazoles / chemistry*
  • Indoles / chemistry*
  • Models, Molecular
  • Molecular Structure
  • Water / chemistry

Substances

  • 3,3'-((1RS,3SR)-2-oxocyclohexane-1,3-diyl)bis((3RS,3'SR)-3-hydroxyindolin-2-one)dihydrate
  • Imidazoles
  • Indoles
  • Water