The title compound, C8H8N4Se2, crystallizes in a non-symmetrical conformation with a dihedral angle between the heterocycles of 45.0 (3)° and a nearly strain-free tetra-methyl-ene tether. The crystal studied was non-merohedrally twinned with a fractional contribution of 0.342 (3) for the minor twin component.
Keywords: crystal structure; heterocycles; medium-sized ring; selenium.
© Detert and Schollmeyer 2020.