Acta Cryst. (2009). E65, m91  [ doi:10.1107/S1600536808039615 ]

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

Y.-F. Wei, Z.-S. Li, H.-H. Zhang and Y.-H. Wang

Abstract: 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 Zn^II and O atoms of the coordinated and uncoordinated water molecules. The coordination around the Zn^II 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-HO hydrogen bonds between the coordinated water molecule and the ligand and between the uncoordinated water molecule and the ligand dominate the crystal packing.

Online 17 December 2008

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