Extended Data Fig. 1: Plot of the occupancies of Ce-1∙C6H5CH3 (blue) and Ce-2∙C6H5CH3 (orange) versus time in a single crystal at 263 K.

Each data point represents the average occupancy over the collection of a complete single-crystal data set (99 min). Error bars represent the estimated standard deviations (esds) in the occupancies associated with each collection. The derived rate constant for the forward isomerization is 7.07 × 10−5 % ∙ min−1.