Abstract
The title compound, C6H8N6, crystallizes as an N—H⋯N hydrogen-bond-linked dimer of two almost identical molecules in the asymmetric unit. Both of the molecules are almost planar (rms deviations of 0.0186 and 0.0296 Å in the two molecules) and their hydrazino groups are turned towards the pyrazole rings. The dimers are arranged into chains via intermolecular N—H⋯N hydrogen bonds between the hydrazino groups and the N atoms of the pyrimidine rings of both types of the molecules, linking the molecules into a C(7) graph-set motif along [100]. The methyl groups and the N atoms of the pyrazole rings form weak C—H⋯N hydrogen bonds, which connect chains of the dimers in a C(4) motif parallel to [100].
Highlights
The title compound, C6H8N6, crystallizes as an N—H N hydrogen-bond-linked dimer of two almost identical molecules in the asymmetric unit
Hydrogen-bond-linked dimer of two almost identical molecules in the asymmetric unit. Both of the molecules are almost planar and their hydrazino groups are turned towards the pyrazole rings
The synthesis of the title compound was performed according to the procedure reported by Taylor & Loeffler (1960)
Summary
Dolzhenko,a Geok Kheng Tanb and Lip Lin Kohb a Department of Pharmacy, Faculty of Science, National University of Singapore, 18. The title compound, C6H8N6, crystallizes as an N—H N hydrogen-bond-linked dimer of two almost identical molecules in the asymmetric unit. Both of the molecules are almost planar (rms deviations of 0.0186 and 0.0296 Å in the two molecules) and their hydrazino groups are turned towards the pyrazole rings. The methyl groups and the N atoms of the pyrazole rings form weak C—H N hydrogen bonds, which connect chains of the dimers in a C(4) motif parallel to [100]
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