7-Amino-2,5-dimethylpyrazolo[1,5-a]-pyrimidine hemihydrate redetermined at 120 K: A three-dimensional hydrogen-bonded framework

Abstract

In the title compound, C8H10N4·0. 5H2O, where the water molecules lie on twofold rotation axes in the space group C2, the components are linked by three hydrogen bonds, one each of O-H⋯N, N-H⋯N and N-H⋯O types, into a complex three-dimensional framework structure. © 2006 International Union of Crystallography.