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. Author manuscript; available in PMC: 2011 Feb 3.
Published in final edited form as: J Am Chem Soc. 2010 Feb 3;132(4):1273–1275. doi: 10.1021/ja909718f

Figure 2.

Figure 2

RR spectra of 2·16O2 (black) and 2·18O2 (red) after addition of 0, 0.5, 1.0, 1.5, and 2.0 equiv of H[BArF4]. Each spectrum was normalized based on the solvent CH3CN bands at 392, 400, and 920 cm−1.