Fig. 2: Encapsulation of corannulene and its dynamic inversion.
From: A curved host and second guest cooperatively inhibit the dynamic motion of corannulene
a 1H NMR spectrum (CD3CN, 400 MHz, 298 K) of 1 mixed with excess corannulene. Green circles correspond to 1 and light-blue triangles to corannulene⊂1. b Schematic illustration of the exchange of adjacent protons Hq and Hq′ during corannulene inversion, signals of encapsulated corannulene in variable temperature 1H NMR spectra (CD3CN, 500 MHz) of cage 1 with corannulene guests, and the corresponding simulated spectra obtained by line-shape analysis. After inversion, Hq (red) has exchanged with Hq′ (white) relative to the host. The rolling of the corannulene without inversion within the four ligand walls will not exchange protons Hq and Hq′. c Eyring plot for the inversion of corannulene inside of 1.
