“…The resonances for the carbon atoms attached to the bismuth atom are visible as broad singlets at δ = 168.2 (2-P), 167.9 (2-As), 171.7 (2-Sb), and 174.6 ppm (2-Bi), which is at significantly lower field than the respective signals in a recently reported tricarbabismatrane (δ = 159.3 ppm) 48 and the literature-known 2,3,6,7,14,15-hexamethyl-9-phospha-10-bismatriptycene (163.4 ppm) 19 as well as 9-bisma-10-silatriptycene (δ = 157.2 ppm). 21 Upon triptycene formation, the resonances for the carbon atoms bound to the second pnictogen atoms can be found at similar chemical shifts as the signals for the respective homodipnictatriptycenes (II−P, 145.3; 46 2,3,6,7,14,15-hexamethyl-9,10-diphosphatriptycene, 142.9; 18 II−As, 146.1; 49 2,3,6,7,14,15-hexamethyl-9,10-distibatriptycene, 146.0 ppm 17 ) but are shifted toward lower magnetic field (2-P, δ = 144.8; 2-As, 149.2; 2-Sb, 152.3; 2-Bi, 174.6 ppm) compared to their precursors 1-Pn (see Table 1).…”