(IUCr) Crystallography Journals Online

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Acta Cryst. (2009). E65, m1223 [ doi:10.1107/S1600536809036939 ]

Poly[[bis[₂-8-ethyl-5-oxo-2-(piperazin-1-yl)-5,8-dihydropyrido[2,3-d]pyrimidine-6-carboxylato]zinc(II)] dihydrate]

W. Xu, D.-S. Zhu, X.-D. Song and Z. An

Abstract: The title compound, {[Zn(C₁₄H₁₆N₅O₃)₂]·2H₂O}_n or [Zn(ppa)₂]·2H₂O}_n, where ppa = 8-ethyl-5,8-dihydro-5-oxo-2-(1-piperazinyl)-pyrido(2,3-d)-pyrimidine-6-carboxylate, was synthesized under hydrothermal conditions. The Zn^II atom (site symmetry $\\overline{1}$ ) exhibits a distorted trans-ZnN₂O₄ octahedral geometry defined by two monodentate N-bonded and two bidentate O,O-bonded ppa monoanions. The extended two-dimensional structure arising from this connectivity is a square grid and the disordered uncoordinated water molecules occupy cavities within the grid. An N-HO hydrogen bond occurs.

Online 19 September 2009

Poly[[bis[2-8-ethyl-5-oxo-2-(piperazin-1-yl)-5,8-dihydropyrido[2,3-d]pyrimidine-6-carboxylato]zinc(II)] dihydrate]

W. Xu, D.-S. Zhu, X.-D. Song and Z. An

Poly[[bis[₂-8-ethyl-5-oxo-2-(piperazin-1-yl)-5,8-dihydropyrido[2,3-d]pyrimidine-6-carboxylato]zinc(II)] dihydrate]