Figure 3.
Isotropic EPR spectra of 0.5 mM solutions of (a) (L1)⋅ and (b) (L2)⋅ at pH 7 (0.1 M aqueous HEPES buffer). Red line: Simulation using the τc given in the text and an anisotropic AN value corresponding to Aiso=1.7 mT. Microwave Freq. 9.43 GHz, power. 3.5 mW; Mod. Amp. 0.2 mT, Freq. 100 KHz. T=293 K.
