A monoclinic polymorph of N,N′-bis­(2,6-diisopropyl­phen­yl)formamidine

A new polymorph of N,N′-bis­(2,6-diisopropyl­phen­yl)formamidine, C(25)H(36)N(2), is reported, which is different from the previously reported ortho­rhom­bic structure. The mol­ecule crystallizes in the E–anti configuration, with tautomeric disorder of the N-bonded H atoms and no clear distinction between imine and amine functionalities. The mol­ecules form hydrogen-bonded dimers with inter­molecular N⋯N distances shorter than those in the ortho­rhom­bic polymorph.