. Author manuscript; available in PMC: 2013 May 2.

Published in final edited form as: J Am Chem Soc. 2012 Apr 23;134(17):7367–7377. doi: 10.1021/ja211247f

Table 1.

Electrochemical data for copper complexes 1^R1,R2 and 2^R1,R2

complex	E₁ (mV)	E₂ (mV)	E_ave (mV)	ΔE (mV)	K_c
1^tBu2	450	650	550	200	2500
1^tBu,OMe	250	590	–	340	6 × 10⁵
1^OMe2	240	400	320	160	500
1^OMe,SiPr	280	435	–	155	400
1^SiPr2	340	440	385	110	70
1^tBu,SiPr	340	595	–	255	2 × 10⁴
2^tBu2	80	210	145	130	160
2^tBu,OMe	−90	160	–	250	2 × 10⁴
2^OMe2	−120	−10	−65	110	70
2^OMe,SiPr	−90	70	–	160	500
2^SiPr2	10	80	45	70	15
2^tBu,SiPr	25	150	–	125	130