Acta Cryst. (2009). E65, m1139-m1140  [ doi:10.1107/S1600536809033467 ]

Poly[bis[₄-N-(2-hydroxyiminopropionyl)-N'-(2-oxidoiminopropionyl)propane-1,3-diaminato]dimethanolcalciumdicopper(II)]

V. A. Kalibabchuk, N. I. Usenko, I. A. Golenya, T. S. Iskenderov and M. Haukka

Abstract: In the title compound, [CaCu₂(C₉H₁₃N₄O₄)₂(CH₃OH)₂]_n, the Ca^II atom lies on an inversion center and is situated in a moderately distorted octahedral environment. The Cu^II atom is in a distorted square-pyramidal geometry, defined by four N atoms belonging to the amide and oxime groups of the triply deprotonated residue of N,N'-bis(2-hydroxyiminopropanoyl)propane-1,3-diamine (H₄pap) and one oxime O atom from a neighboring Hpap ligand at the apical site, forming a dimeric [Cu₂(Hpap)₂]^2- unit. Each dimeric unit connects four Ca atoms and each Ca atom links four [Cu₂(Hpap)₂]^2- units through Ca-O(amide) bonds, leading to a three-dimensional framework. The crystal structure involves intra- and intermolecular O-HO hydrogen bonds.

Online 29 August 2009

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