An Orthorhombic Phase of 3,6‐Di(2‐pyridyl)‐1,4‐dihydro‐1,2,4,5‐tetrazine

The title compound, C 12 H 10 N 6 , crystallized in the orthorhombic system with space group P2 1 2 1 2 1 . The N atoms of the two terminal pyridine rings are trans with respect to one another and the dihedral angle between the two least-squares planes of the pyridine rings is 22.6 (2)°. The central tetrazine ring has a boat conformation. Both intra- and intermolecular hydrogen bonds are observed.