Received 18 November 2011
In the cation of the title salt, [Ag(C12H6N2O2)2](C7H3N2O7), the AgI atom is coordinated in a distorted tetrahedral geometry by four N atoms from two 1,10-phenanthroline-5,6-dione ligands, while the 3,5-dinitrosalicylate anion has only a short contact [2.847 (6) Å] between one of its O atoms and the AgI atom. The dihedral angle between the two 1,10-phenanthroline-5,6-dione ligands is 58.4 (1)°. There is an intramolecular O-HO hydrogen bond in the 3,5-dinitrosalicylate anion.
For general background to the structures and potential applications of supramolecular architectures with 1,10-phenantroline-5,6-dione and 3,5-dinitrosalicylic acid, see: Hiort et al. (1993); Song et al. (2007); Che et al. (2008); Onuegbu et al. (2009). For the synthesis of the 1,10-phenantroline-5,6-dione ligand, see: Dickeson & Sumers (1970).
Data collection: SMART (Bruker, 2007); cell refinement: SAINT (Bruker, 2007); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008) and DIAMOND (Brandenburg, 1999); software used to prepare material for publication: SHELXTL.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: VN2025 ).
The authors thank Jiangsu University for supporting this work.
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