Acta Cryst. (2012). E68, o3347
[ doi:10.1107/S1600536812046223 ]
Abstract: In the title compound, C10H20N4O3, the piperazine ring adopts a chair conformation. The molecule adopts an E conformation across the C=N double bond, with the -OH group and the piperazine ring trans to one another. Further, the H atom of the hydroxy group is directed away from the NH2 group. An intramolecular N-HO contact occurs involving the NH2 group and the oxime O atom. In the crystal, molecules are linked via strong N-HO and O-HN hydrogen bonds with alternating R22(6) and C(9) motifs into tetrameric units forming R44(28) motifs.
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