Extended Data Fig. 10: Probable direction of the movement of two CBPQT^4+/2(+•) rings during the redox operation of [3]CMM¹³⁺.

Clockwise means that each CBPQT^4+/2(+•) ring sees the substituents on the loop in the order T → PY⁺ → V^2+/+• → V^2+/+• → IPP → T and counterclockwise means that each ring sees the substituents on the loop in the order T → IPP → V^2+/+• → V^2+/+• → PY⁺ → T. The curly arrows represent the direction in which the two rings move around the loop. The ‘p_red’ and ‘p_ox’ near the arrows are the probability of clockwise motion of the two rings on the loop in the redox cycle. The k_red,+, k_red,−, k_ox,− and k_ox,+ are the corresponding rate constants for the probable steps during the redox cycle, respectively, and the clockwise and counterclockwise steps are also indicated by ‘+’ and ‘−’, respectively. The 180° rotation is represented by ‘1/2’.