Isomers and polymorphs of (E,E)-1,4-bis(nitrophenyl)-2,3-diaza-1,3-butadienes

Glidewell, C.; Low, J.N.; Skakle, J.M.S.; Wardell, J.L.

doi:10.1107/S010876810601439X

Figure 1
The molecule of polymorph (Ia) showing the atom-labelling scheme. Displacement ellipsoids are drawn at the 30% probability level, and the atoms marked with `a' are at the symmetry position (1 - x, 1 - y, 1 - z).