3-Acetyl-2,4-di­methyl­quinolin-1-ium chloride

In the title salt, C₁₃H₁₄NO⁺·Cl⁻, the dihedral angle between the fused ring system (r.m.s. deviation = 0.039 Å) and the attached aldehyde group is 75.27 (16)°. In the crystal, the cation and anion are linked by an N—H...Cl hydrogen bond and the resulting pairs are connected into four-ion aggregates by π–π inter­actions between the C₆ and pyridinium rings [3.6450 (9) Å] of inversion-related quinolinium residues.

(2E)-1-(4-Bromo­phen­yl)-3-[3-(4-meth­oxy­phen­yl)-1-phenyl-1H-pyrazol-4-yl]prop-2-en-1-one

The pyrazole ring in the title compound, C₂₅H₁₉BrN₂O₂, is almost planar (r.m.s. deviation = 0.003 Å) and forms dihedral angles of 7.56 (13) and 56.48 (13)° with the N- and C-bound benzene rings, respectively. The prop-2-en-1-one residue has an E conformation about the C=C double bond [1.328 (4) Å] and is almost coplanar with the pyrazole ring [C—C—C—C torsion angle = −174.4 (3)°]. A twist between the prop-2-en-1-one unit and the terminal benzene ring is evident [C—C—C—C torsion angle = −15.4 (4)°]. In the crystal, mol­ecules are consolidated into a three-dimensional architecture by C—H...O, C—H...π and π–π [centroid–centroid separation = 3.7597 (16) Å] inter­actions.