Fig. 7: The assembly process and single crystal X-ray structural analysis of 4.
From: Thermally-induced atropisomerism promotes metal-organic cage construction
a The scheme presentation of the complexation between 3 and Pd2+ ion with a 1:2 molar ratio in THF/DMSO at 338 K for 12 h. b 1H NMR spectrum of 3 in the presence (b1) and absence (b2) of 2 molar equiv. of (PhCN)2PdCl2. c 1H DOSY spectrum of the complexes containing 3 and Pd2+ (600 MHz, THF-d8/DMSO-d6 (1/4), 298 K). Single crystal X-ray diffraction structures of 4 (d, e, top and side view, respectively). Color code: C red or yellow, N purple, Pd bluish green, Cl green. Hydrogen atoms and solvent molecules have been omitted for clarity. The yellow macrocycle is C2v symmetric, and the red macrocycle is C4v symmetric.
