| pubmed-article:21583438 | pubmed:abstractText | The title compound, C(6)H(8)N(6), crystallizes as an N-H?N hydrogen-bond-linked dimer of two almost identical mol-ecules in the asymmetric unit. Both of the mol-ecules 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 inter-molecular N-H?N hydrogen bonds between the hydrazino groups and the N atoms of the pyrimidine rings of both types of the mol-ecules, linking the mol-ecules 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]. | lld:pubmed |
