Fig. 6: The transformation between three atropisomers of 1–3 at 473 K.
From: Thermally-induced atropisomerism promotes metal-organic cage construction

a Schematic representation of the transformation between 1, 2, and 3 in PhNO2-d5 at 473 K. b Time-dependent 1H NMR spectra of 1 (5.3 × 10−3 M) in PhNO2-d5 at 473 K. c Time-dependent conversion between 1 (blue dot), 2 (green dot), and 3 (red dot) and related non-linear fitting curves (solid lines) at 473 K. d The potential energy diagram for the conversion between 1, 2, and 3 in PhNO2-d5 at 473 K. The transition states are listed based on theoretical calculation.