Crystal structure of 3,6-bis-(pyridin-2-yl)-1,4-di-hydro-1,2,4,5-tetra-zine

The structure of the title compound, C(12)H(10)N(6), at 100 K has monoclinic (P2(1)/n) symmetry. Crystals were obtained as a yellow solid by reduction of 3,6-bis-(pyridin-2-yl)-1,2,4,5-tetra-zine. The structure displays inter-molecular hydrogen bonding of the N-H⋯N type, ordering mol-ecules into infinite ribbons extending along the [100] direction.