N,N′-Bis[(1H-imidazol-1-yl)meth­yl]-2,2′-(disulfanedi­yl)dianiline

The symmetrical title compound, C₂₀H₂₀N₆S₂, contains a disulfide bond of 2.0884 (6) Å. The C—S—S—C torsion angle is −59.57 (7)°. In the crystal, classical N—H...N and non-classical C—H...N hydrogen bonds link the compounds into chains along the a axis.

1,3-Bis(2-anilino-2-oxoeth­yl)-1H-imidazol-3-ium chloride

In the cation of the title salt, C₁₉H₁₉N₄O₂⁺·Cl⁻, the dihedral angles between the imidazole ring and the phenyl rings are 70.39 (8) and 86.26 (9)°. The chloride anion inter­acts with the cation through an N—H...Cl hydrogen bond. In the crystal, classical N—H...O hydrogen bonds link the cations into chains parallel to the b axis. Non-classical C—H...Cl and C—H...O hydrogen bonds further connect the chains into a three-dimensional network.

N-[2-(Methyl­sulfan­yl)phen­yl]-2-sulfanylbenzamide

In the title compound, C₁₄H₁₃NOS₂, the S atom with the methyl group is involved in an intra­molecular hydrogen bond with the amido H atom. In the crystal, the sulfanyl H atoms form inter­molecular hydrogen bonds with the O atoms, connecting the mol­ecules into zigzag chains along the c axis. The two aromatic rings exhibit a small interplanar angle of 16.03 (9)°.

1,3-Bis(2-anilino-2-oxoeth­yl)-1H-imidazol-3-ium chloride dimethyl­formamide monosolvate

In the imidazolium cation of the title compound, C₁₉H₁₉N₄O₂⁺·Cl⁻·C₃H₇NO, the dihedral angles between the imidazole ring and the phenyl rings are 85.86 (4) and 70.26 (5)°. In the crystal, N—H...Cl hydrogen bonds link the imdiazo­lium cations and chloride anions into zigzag chains along [110] and together with C—H...Cl and C—H...O hydrogen bonds, which involve also the dimethyl­formamide solvent mol­ecule, form a two-dimensional network extending across the ab plane.