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. Author manuscript; available in PMC: 2017 Feb 1.
Published in final edited form as: J Am Chem Soc. 2015 Jul 23;137(30):9704–9715. doi: 10.1021/jacs.5b05229

Figure 4.

Figure 4

EPR spectra (red and green) of 3a under the same conditions as in Figure 3D. The inset shows an expanded view at g = 1.992 for 56Fe and enriched 57Fe samples. The dashed lines are S = 1/2 simulations with and without inclusion of a hyperfine term for I = 1/2 with A = 18 MHz.