N (4),N (4′)-Bis(4-meth­oxy­benzyl­idene)-3,3′-dimethyl­benzidine

The mol­ecule of the title compund, C(30)H(28)N(2)O(2), a Schiff base synthesised via a condensation reaction between 4-meth­oxy­benzaldehyde and 3,3′-dimethyl­benzidine, a crystallographic twofold rotation axis passes through the mid-point of the C—C bond of the biphenyl unit. Thus, the asymmetric unit comprises one half-mol­ecule. In the biphenyl unit, the aromatic rings are twisted by 13.49 (7)° with respect to one another. The dihedral angles between the biphenyl and meth­oxy­benzene rings are 49.95 (12) and 50.06 (12)°. In the crystal, weak inter­molecular C—H⋯ O hydrogen bonds contribute to the stabilization of the packing.