(E,E)-1,2-Bis[3-(prop-2-yn-1-yl-oxy)benzyl-idene]hydrazine.

The mol-ecule of the title compound, C(20)H(16)N(2)O(2), is centrosymmetric, the inversion center being located at the mid-point of the central azine bond. The conformation around the C=N bond is E. The whole mol-ecule (except for the H atoms) is essentially planar, with an r.m.s. deviation of 0.07 Å. In the crystal, mol-ecules are linked head-to-tail by pairs of C-H⋯O hydrogen bonds, forming inversion dimers, and resulting in the formation of chains propagating along [011].