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

Portilla, J.; Quiroga, J.; Cobo, J.; Low, J.N.; Glidewell, C.

doi:10.1107/S0108270106005373

Acta Crystallographica Section C
Acta Crystallographica
Section C STRUCTURAL CHEMISTRY

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Figure 3
Part of the crystal structure of (I), showing the formation of a [001] chain of linked R₂²(10) dimers. For the sake of clarity, H atoms not involved in the motif shown have been omitted. Atoms marked with an asterisk (*), a hash (#), a dollar sign ($) or an ampersand (&) are at the symmetry positions (− $[{1\over 2}]$ + x, $[{1\over 2}]$ + y, z), ( $[{3\over 2}]$ − x, $[{1\over 2}]$ + y, 2 − z), ( $[{3\over 2}]$ − x, $[{1\over 2}]$ + y, 1 − z) and (− $[{1\over 2}]$ + x, $[{1\over 2}]$ + y, −1 + z), respectively. Atoms O1A and O1B are at ( $[{1\over 2}]$ , y, $[{3\over 2}]$ ) and ( $[{1\over 2}]$ , y, − $[{1\over 2}]$ ), respectively.

STRUCTURAL
CHEMISTRY

ISSN: 2053-2296

Volume 62| Part 4| March 2006| Pages o186-o189

doi:10.1107/S0108270106005373

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