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The title compound, C(26)H(26)N(2)S(2), was synthesized from bis[1,3-bis(3-phenylpropyl)benzimidazolidine-2-ylidene] and CS(2) in toluene. The molecular structure is composed of a benzimidazole ring system with two phenylpropyl substituents and a dithiocarboxylate group in the 2-position. The benzimidazole unit is essentially planar, with a maximum atomic deviation of 0.008 (2) angstrom, and makes dihedral angles of 72.72 (10) and 27.62 (12)degrees, with the two phenyl rings. The dihedral angle between the two phenyl rings is 55.98 (15)degrees. The molecular packing is stabilized by a C-H center dot center dot center dot S intermolecular hydrogen-bonding interaction and a C-H center dot center dot center dot pi interaction between a benzene H atom and the phenyl ring of a neighbouring molecule.