Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 8 (August 2013)

metal-organic compounds

Acta Cryst. (2013). E69, m477-m478    [ doi:10.1107/S1600536813020631 ]

catena-Poly[ammonium [aqua­bis­([mu]-2,3,5,6-tetra­oxo-4-nitro­pyridin-4-ido)argentate(I)]]

N. Dinh Do, O. Kovalchukova, A. Stash and S. Strashnova

Abstract: In the title compound, {(NH4)[Ag(C5HN2O6)2(H2O)]}n, the AgI cation is seven-coordinated and is surrounded by four oxo O atoms of the 2,3,5,6-tetra­oxo-4-nitro­pyridin-4-ide species [Ag-O = 2.3848 (19), 2.4931 (18), 2.5361 (18) and 2.573 (2) Å], two nitro O atoms [Ag-O = 2.644 (2) and 2.661 (2) Å], and one water mol­ecule [Ag-O = 2.3133 (19) Å]. The pyridin-4-ide mono-anions act as polydentate bridging ligands and form a three-dimensional network that is stabilized through O-H...O and N-H...O hydrogen bonds involving the coordinating water mol­ecule and the imide function as donator groups. The ammonium cations are located in the cavities of the framework and are also involved in hydrogen bonding to O atoms of the ligand.

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