N,N′-diphenylethylenediamine, an N-H •••π- and C-H•••π-bonded network

N,N'-Diphenylethylenediamine, C14H16N2, forms monoclinic crystals, with a centre of symmetry at the mid-point of the central C-C bond. In the crystal structure, the intermolecular interactions are primarily of N-H center dot center dot center dot pi and C-H center dot center dot center dot pi character, without any contribution from N-H center dot center dot center dot N hydrogen bonding. The N-H center dot center dot center dot pi and C-H center dot center dot center dot pi interactions, when considered separately, give rise to two sets of layers that, on superposition, generate a network structure.