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. Author manuscript; available in PMC: 2019 Mar 1.
Published in final edited form as: J Biol Inorg Chem. 2017 Nov 25;23(2):193–207. doi: 10.1007/s00775-017-1518-4

Figure 3.

Figure 3

(Top) The Eyring plot for the conversion of 1.0 mM 1 to 2 in CH3CN in the presence of 10 equiv. HPyr+. Temperature range: −15 to +15 °C. Error bars show one standard deviation from at least three independent measurements. (Bottom) Correlation of kobs (monitored at 720 nm) with the acidities of various substituted pyridinium tosylates. Conditions: 1.0 mM 1 in CH3CN, 10 °C, 10 equiv. pyridinium, 2,6-lutidinium, or 2,4,6-collidinium tosylate. kobs of 3-bromopyridinium at 10 °C was extrapolated from an Eyring plot collected at a temperature range of -30 to 0 °C (Figure S2).