2-(2-Meth­oxy­phen­yl)-4,5-bis­(4-methyl­phen­yl)-1H-imidazol-3-ium 2,4,6-tri­nitro­phenolate

The title imidazolium picrate salt crystallizes in the triclinic space group P1. The asymmetric unit consists of one imidazolium cation and one picrate anion. There is an intra­molecular N—H⋯O hydrogen bond within the imidazolium cation and an inter­molecular N—H⋯O hydrogen bond between the imidazolium cation and the picrate anion. In the crystal, the ions are further associated through π–π stacking inter­actions,

3-(4-Chloro­phen­yl)-3-hy­droxy-1-phenyl­prop-2-ene-1-thione

In the title compound, the dihedral angle between the aromatic rings is 13.06 (6)° and an intra­molecular O—H⋯S hydrogen bond supports the mol­ecular conformation. In the extended structure, weak C—H⋯O hydrogen bonds connect the mol­ecules into [010] chains.

1,1′-(2,2-Di­phenyl­ethene-1,1-di­yl)bis­(3,5-di­methyl-1H-pyrazol-2-ium) dichloride

The title compound crystallizes in the triclinic space group P1. The ethene derivative is substituted by two phenyl groups in 2-position and two 3,5-di­methyl­pyrazolinium units in 1-position, which makes this alkene into a dication. Two chloride ions act as counter-ions in the crystal structure and are linked via N—H⋯Cl and C—H⋯Cl inter­actions with the alkene. The crystal structure features a three-dimensional network stabilized by N—H⋯Cl, C—H⋯Cl and C—H⋯π inter­actions.

2-[(3-Chloro-2-methyl­phen­yl)amino]­quinoline-3-carb­oxy­lic acid

Single crystals of 2-[(3-chloro-2-methyl­phen­yl)amino]­quinoline-3-carb­oxy­lic acid were obtained from slow evaporation of an ethyl acetate solution. In the crystal, the mol­ecules pair up to form acid–acid homodimers.