C 24 H 24 Ag 2 N 6 O 10 , triclinic, P1 (no. 2), a = 3.807(3) Å, b = 11.55(1) Å, c = 16.21(1) Å, a = 74.17(1)°, b = 84.75(1)°, g = 89.89(1)°, V = 682.6 Å 3 , Z = 1, R gt (F) = 0.045, wR ref (F 2 ) = 0.153, T = 293 K. Source of materialAll reagents and solvents were used as purchased without further purification. C, H and N elemental analyses were performed on a Perkin-Elmer elemental analyzer. Ag 2O (1 mmol, 232 mg) and 3-nitrobenzoic acid (1 mmol, 151 mg) were dissolved in ammonia solution (10 ml), stirred for ca. 10 min to obtain a clear solution. 4-aminopyrimidine (1 mmol, 81 mg) was added to the above solution with stirring. After the solution was kept in air for four days with the ammonia gas escaping, large colorless crystals were formed, collected, washed with water, and dried in a vacuum desiccator using CaCl 2 (yield 55 %). Elemental analysis: found -C, 37.55 %; H, 3.06 %; N, 10.70 %. Calc. for C 12 H 12 AgN 3 O 5 -C, 37.33 %; H, 3.13 %; N, 10.88 %.

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