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In the title compound, C18H16N2, there are two independent half-molecules (A and B) in the asymmetric unit, each molecule being completed by an inversion center situated in the mid-point of the central N—N bond. The molecules themselves therefore are essentially planar with r.m.s. deviations of 0.015 (1) and 0.020 (1) Å, respectively. In the crystal, molecules are connected via C—H...π interactions in which only type B molecules are donors, while both A and B molecules act as acceptors. As a result, type B molecules are linked into infinite chains along b, which are interconnected by molecules of type A.