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. Author manuscript; available in PMC: 2014 Feb 20.
Published in final edited form as: J Am Chem Soc. 2013 Feb 8;135(7):2825–2834. doi: 10.1021/ja312523u

Figure 8.

Figure 8

X-band EPR spectra of (a) [CuII(tepa)]2+ (5.0 × 10−5 M) in deaerated acetone at 77 K, (b) the reaction solution of 1 (5.0 × 10−5 M) with Me2Fc (3.0 × 10−4 M) in the presence of HClO4 (3.0 × 10−3 M) in O2-saturated acetone at 77 K and (c) [CuII(tepa)(OOH)]+ (3) generated by reaction of [CuII(tepa)]2+ (5.0 × 10−5 M) with H2O2 (1.0 × 10−3 M) in presence of Me4NOH (1.0 × 10−3 M) recorded in deaerated acetone at 77 K. The experimental parameters: microwave frequency = 9.2 GHz, microwave power = 1.0 mW and modulation frequency = 100 kHz. The simulated spectra were obtained with the EPR parameters of g∥ = 2.320, g⊥ = 2.128, A∥ = 159 G, A⊥ = 25 G, linewidth σ∥ (σzz) = 48 G, σ⊥ = σxx = σyy = 100 G for [CuII(tepa)]2+ and g∥ = 2.259, g⊥ = 2.063, A∥ = 165 G, A⊥ = 22 G, linewidth σ∥ (σzz) = 25 G, σxx = 10 and σyy =70 G for Cu and 14.3 G for 3N of [CuII(tepa)(OOH)]+.