2,5-Bis{[(-)-(S)-1-(4-methyl­phen­yl)eth­yl]imino­meth­yl}thio­phene

The title chiral bis-aldimine, C₂₄H₂₆N₂S, was synthesized using a solvent-free Schiff condensation. The mol­ecule displays crystallographic C₂ symmetry, with the S atom lying on the twofold axis parallel to [100]. As a consequence of the (S,S) stereochemistry, the tolyl groups are oriented towards opposite faces of the thiophene core, giving a twisted conformation for the whole mol­ecule. Mol­ecules are arranged in the crystal in a herringbone-like pattern, without any significant inter­molecular contacts.

(+)-(S)-N-[(1-Benzo­thio­phen-2-yl)methyl­idene]-1-(naphthalen-1-yl)ethyl­amine

In the title compound, C₂₁H₁₇NS, the C=N double bond shows an E conformation. The dihedral angle between the mean planes of the naphthyl residue and the benzo­thio­phene residue is 89.14 (6)°. The crystal packing is stabilized by inter­molecular C—H...π inter­actions, building a ribbon structure along the a axis.