Acta Crystallographica Section C

Crystal Structure Communications

Volume 62, Part 8 (August 2006)

organic compounds

sk3040 scheme

Acta Cryst. (2006). C62, o521-o524 [ doi:10.1107/S0108270106025893 ]

A hydrogen-bonded chain of rings in 7-amino-5-tert-butyl-2-methylpyrazolo[1,5-a]pyrimidine, and a hydrogen-bonded framework structure in 3,7-diamino-2,5-dimethylpyrazolo[1,5-a]pyrimidine monohydrate

J. Portilla, J. Quiroga, J. M. de la Torre, J. Cobo, J. N. Low and C. Glidewell

Abstract: In 7-amino-5-tert-butyl-2-methylpyrazolo[1,5-a]pyrimidine, C₁₁H₁₆N₄, which crystallizes with Z' = 2 in the space group P $\overline{1}$ , the independent molecules are linked by four N-HN hydrogen bonds into chains containing three types of ring. In 3,7-diamino-2,5-dimethylpyrazolo[1,5-a]pyrimidine monohydrate, C₈H₁₁N₅·H₂O, the molecular components are linked into a three-dimensional framework structure by a combination of O-HN, N-HN and N-HO hydrogen bonds.

Formula: C₁₁H₁₆N₄ and C₈H₁₁N₅·H₂O


	Structure factor file (CIF format) (238.2 kbytes) [ doi:10.1107/S0108270106025893/sk3040Isup2.hkl ] Contains datablock I

	Structure factor file (CIF format) (107.6 kbytes) [ doi:10.1107/S0108270106025893/sk3040IIsup3.hkl ] Contains datablock II

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