Acta Cryst. (2010). E66, o459-o460  [ doi:10.1107/S1600536810002564 ]

4,7-Phenanthrolinium perchlorate-5-methyl-1,2,4-triazolo[1,5-a]pyrimidin-7(4H)-one-water (1/1/2)

A. B. Caballero, M. Quirós and J. M. Salas

Abstract: The asymmetric unit of the title compound, C₁₂H₉N₂⁺·ClO₄^-·C₆H₆N₄O·2H₂O, contains a monoprotonated 4,7-phenanthrolinium (47phen) cation, a perchlorate anion balancing its charge, a neutral molecule of 5-methyl-1,2,4-triazolo[1,5-a]pyrimidin-7(4H)-one (HmtpO) and two interstitial water molecules. In the crystal structure, the acidic H atoms of 47phenH⁺ and HmtpO form strong hydrogen bonds with the water molecules, which in turn act as hydrogen-bond donors, forming links between them and towards the carbonyl O atom of HmtpO, the non-protonated N atom of 47phen⁺ and one of the O atoms of the anion.

Online 27 January 2010

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