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

Published in final edited form as: J Am Chem Soc. 2012 Apr 24;134(17):7293–7296. doi: 10.1021/ja3019324

¹H NMR spectra (d₇-DMF) of: (a) mixed-valence 2 (-20 °C); (b) reaction of 2 with DMAP-H⁺ to give mixed-valence and protonated 4 (-20 °C); (c) reaction of 4 with 0.5 equiv of ^tBu₂Q to give 1 and 0.5 equiv ^tBu₂H₂Q. Legend: = 2; = 1; = ^tBu₂H₂Q; ● = DMAP; ○ = Et₄N+; * = DMF.

Inline graphic — ¹H NMR spectra (d₇-DMF) of: (a) mixed-valence 2 (-20 °C); (b) reaction of 2 with DMAP-H⁺ to give mixed-valence and protonated 4 (-20 °C); (c) reaction of 4 with 0.5 equiv of ^tBu₂Q to give 1 and 0.5 equiv ^tBu₂H₂Q. Legend: = 2; = 1; = ^tBu₂H₂Q; ● = DMAP; ○ = Et₄N+; * = DMF.