Acta Crystallographica Section E (Jan 2009)

Aquabis(2-methyl-4-oxopyrido[1,2-a]pyrimidin-9-olato)zinc(II) monohydrate

  • Yu-Feng Wei,
  • Zhong-Shu Li,
  • Huai-Hong Zhang,
  • Yi-Hong Wang

DOI
https://doi.org/10.1107/S1600536808039615
Journal volume & issue
Vol. 65, no. 1
pp. m91 – m91

Abstract

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The crystal structure of the title compound, [Zn(C9H7N2O2)2(H2O)]·H2O, involves discrete mononuclear complex molecules. The special positions on the rotation twofold axis are occupied by ZnII and O atoms of the coordinated and uncoordinated water molecules. The coordination around the ZnII atom can be described as transitional from trigonal-bipyramidal to square-pyramidal. The two chelating 2-methyl-4-oxopyrido[1,2-a]pyrimidin-9-olate ligands and the coordinated water molecule form the Zn coordination. O—H...O hydrogen bonds between the coordinated water molecule and the ligand and between the uncoordinated water molecule and the ligand dominate the crystal packing.