Acta Crystallographica Section E

Structure Reports Online

Volume 70, Part 5 (May 2014)


metal-organic compounds



wm5013 scheme

Acta Cryst. (2014). E70, m174-m175    [ doi:10.1107/S1600536814007569 ]

Poly[diaquatris([mu]6-4,6-dioxo-1,4,5,6-tetra­hydro-1,3,5-triazine-2-carboxylato)tripotassium]

S. Soudani, E. Aubert, E. Wenger, C. Jelsch, I. Gautier-Luneau and C. Ben Nasr

Abstract: The asymmetric unit of the title compound, [K3(C4H2N3O4)3(H2O)2]n, contains two potassium cations (one in general position, one located on a twofold rotation axis), one and a half oxonate anions (the other half generated by twofold symmetry) and one water mol­ecule. As a result of the twofold symmetry, one H atom of the symmetric anion is statistically occupied. Both potassium cations are surrounded by eight oxygen atoms in the form of distorted polyhedra. Adjacent cations are inter­connected by oxygen bridges, generating layers parallel to (100). The aromatic ring system of the oxonate anions link these layers into a network structure. The crystal packing is stabilized by N-H...O, O-H...O and O-H...N hydrogen bonds, three of which are bifurcated. In addition, inter­molecular [pi]-[pi] stacking inter­actions exist between neighboring aromatic rings with a centroid-centroid distance of 3.241 (2) Å.

CCDC reference: 995461


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