2-[(4-Benzhydrylpipérazin-1-yl)méthyl]acrylonitrile

In the title compound, 2-[(4-benz­hydryl­piperazin-1-yl)­methyl]­acrylo­nitrile, C21H23N3, the substituted piperazine ring adopts a chair conformation and the dihedral angle between the mean planes of the aromatic rings is 71.61 (8)°

2,2′-Bis(methylene)-3,3′-(2-thioxo-2,3-dihydro-1H-benzimidazole-1,3-diyl)dipropanenitrile

In the title compound, C15H12N4S, the benzimidazole ring is essentially planar, with a mean deviation of 0.0082 (1) Å from the least-squares plane defined by the nine constituent atoms. In the crystal, inversion dimers linked by pairs of C—H...N hydrogen bonds occur