Table 1.

Gibbs free energy values for processes depicted in Figure 7.

ΔG/kJ mol−1	BB	BFB	BSB	BFSB
A	−55.8	−86.3	−59.4	−89.6
B	14.0	20.1	14.2	29.3
C	−30.5	−32.1	−27.9	−27.9
D	−100.3	−138.5	−97.5	−142.8
E	−60.6	−77.1	−62.2	−74.7
F	39.7	61.4	35.3	68.1