Table 1.

Longevity of selected Ru-bda catalysts under the given conditions and the calculated ligand exchange free energy of each complex

complex	A	B	2	1	3
ΔG (kcal/mol)	−2.38	−1.75	0.33	4.61	6.59
Longevity (h)*	0.29	0.064	0.332	1.07	1.37

^*The longevity reported in this table is defined as the time when the oxygen production rate is 5% of the initial rate; see the catalytic data and reaction conditions in Figs. 4 and 5, and ref. 19.