1‐(3‐Quinolyl)‐4‐(2‐thienyl)‐1,3‐butadiyne, C17H9NS

The S atom in the thiophene ring is disordered between positions 1 and 3. The molecular packing would not afford any facile mechanism for crystal-phase polymerization. The thiophene ring is rotated by 55 o with respect to the plane of the quinoline system