In the title compound, C(13)H(12)N(4)O(2), all the non-H atoms lie on a crystallographic mirror plane and an intra-molecular N-H⋯N hydrogen bond generates an S(5) ring; the conformation about the imine bond [1.280 (3) Å] is E. In the crystal, mol-ecules assemble into a two-dimensional array via C-H⋯O(carbon-yl) and C-H⋯N(pyrazine) contacts. Layers stack along the b-axis direction via weak π-π inter-actions between pyrazine rings [ring centroid distance = 3.8028 (8) Å].
In the title compound, C(13)H(12)N(4)O(2), all the non-n class="Disease">H atoms lie on a crystallographic mirror plane and an intra-molecular N-H⋯Nhydrogen bond generates an S(5) ring; the conformation about the imine bond [1.280 (3) Å] is E. In the crystal, mol-ecules assemble into a two-dimensional array via C-H⋯O(carbon-yl) and C-H⋯N(pyrazine) contacts. Layers stack along the b-axis direction via weak π-π inter-actions between pyrazine rings [ring centroid distance = 3.8028 (8) Å].
Authors: F Gordin; R E Chaisson; J P Matts; C Miller; M de Lourdes Garcia; R Hafner; J L Valdespino; J Coberly; M Schechter; A J Klukowicz; M A Barry; R J O'Brien Journal: JAMA Date: 2000-03-15 Impact factor: 56.272