Electrochemical data of BIP and BI₂P analogs in acetonitrile.

Compound	CalculatedaE1/2 (V vs. SCE)	ExperimentalbE1/2 (V vs. SCE)	ΔEp (V)	i c/ia
1	1.00	0.99c	0.07c	0.76c
2	0.93d	0.93c	0.07c	0.65c
3	0.77	0.77	0.07	0.83
4	0.61	0.61	0.10	0.67
1′	0.91	0.93	0.11	0.88
2′	0.77	0.87	0.11	0.98
3′	0.72	0.71	0.10	1.00
4′	0.55	0.55	0.11	0.98

^aEach computed redox potential assumes the maximum number of intramolecular proton transfers. The redox potentials corresponding to the intermediates that would arise from only some of these proton transfers are shown in Table S25.

^bThe potential of the pseudoreference electrode was determined using the ferrocenium/ferrocene redox couple as an internal standard and adjusting to the saturated calomel electrode (SCE) scale (with E_1/2 taken to be 0.40 V vs. SCE in acetonitrile).³⁵

^cValues from ref. 26.

^dReference potential for all compounds in this table; agrees by construction.