Figure 4

ORTEP drawings of thiophene-fused heptalenes (a) 6a (CCDC1965949), (b) 6b (CCDC1965950), and (c) 7 (CCDC1965951); ellipsoids are drawn at the 50% probability level.

ORTEP drawings of thiophene-fused heptalenes (a) 6a (CCDC1965949), (b) 6b (CCDC1965950), and (c) 7 (CCDC1965951); ellipsoids are drawn at the 50% probability level.