Received 26 April 2012
aKey Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Heilongjiang University, Harbin 150080, People's Republic of China,bDepartment of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia, and cChemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203 Jeddah, Saudi Arabia
Correspondence e-mail: firstname.lastname@example.org
Each of the ions in the title salt, [Ag(C6H6N2O)2]ClO4, is completed by the application of crystallographic twofold symmetry. The AgI atom is coordinated by two pyridine N atoms in an almost linear fashion [N-Ag-N = 170.0 (2)°], with the T-shaped coordination geometry being completed by a weakly associated perchlorate-O atom. Supramolecular zigzag chains along  mediated by O-HN hydrogen bonds [as parts of R22(6) loops] feature in the crystal packing. The perchlorate O atoms are disordered over two sets of sites in a statistical ratio.
Data collection: RAPID-AUTO (Rigaku, 1998); cell refinement: RAPID-AUTO; data reduction: CrystalClear (Rigaku/MSC, 2002); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: X-SEED (Barbour, 2001) and DIAMOND (Brandenburg, 2006); software used to prepare material for publication: publCIF (Westrip, 2010).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: HB6761 ).
This work was supported by the Key Project of the Natural Science Foundation of Heilongjiang Province (No. ZD200903), the Key Project of the Education Bureau of Heilongjiang Province (Nos. 12511z023 and 2011CJHB006), the Innovation Team of the Education Bureau of Heilongjiang Province (No. 2010td03), Heilongjiang University (Hdtd2010-04) and the Ministry of Higher Education of Malaysia (grant No. UM.C/HIR/MOHE/SC/12).
Abu-Youssef, M. A. M., Soliman, S. M., Langer, V., Gohar, Y. M., Hasanen, A. A., Makhyoun, M. A., Zaky, A. H. & Ohrstrom, L. R. (2010). Inorg. Chem. 49, 9788-9797.
Barbour, L. J. (2001). J. Supramol. Chem. 1, 189-191.
Brandenburg, K. (2006). DIAMOND. Crystal Impact GbR, Bonn, Germany.
Higashi, T. (1995). ABSCOR. Rigaku Corporation, Tokyo, Japan.
Kundu, N., Audhya, A., Towsif Abtab, Sk. Md., Ghosh, S., Tiekink, E. R. T. & Chaudhury, M. (2010). Cryst. Growth Des. 10, 1269-1282.
Rigaku (1998). RAPID-AUTO. Rigaku Corporation, Tokyo, Japan.
Rigaku/MSC (2002). CrystalClear. Rigaku/MSC Inc., The Woodlands, Texas, USA.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Westrip, S. P. (2010). J. Appl. Cryst. 43, 920-925.
Xu, J., Gao, S., Ng, S. W. & Tiekink, E. R. T. (2012). Acta Cryst. E68, m639-m640.