7-Amino-5-methyl-2-phenyl-6-(phenyl­diazenyl)pyrazolo15-apyrimidine crystallizes with Z′ = 2: pseudosymmetry and the formation of complex sheets built from N—H⋯N and C—H⋯π(arene) hydrogen bonds

摘要

The title compound, C19H16N6, crystallizes with Z′ = 2 in the space group P21. The two mol­ecules in the selected asym­metric unit are approximate mirror images of one another; most corresponding pairs of atoms are related by an approximate half-cell translation along [100]. Each mol­ecule contains an intra­molecular N—H⋯N hydrogen bond and the mol­ecules are linked into complex sheets by a combination of two inter­molecular N—H⋯N and four C—H⋯π(arene) hydrogen bonds. Comparisons are made with some other 7-amino­pyrazolo[1,5-a]pyrimidines.