Fig. 9.
W-band continuous-wave EPR spectra of 0.5 mM tetraethyl-substituted In radicals In4 (a) and In4d (b) measured at 180 K in the mixture of glycerol (20%) and phosphate-buffered water solutions, corresponding to fully protonated (pH 1.2) and deprotonated (pH 8.5) forms of the nitroxides. The simulated spectra of In4d with magnetic parameters listed in Table 2 are shown by dashed lines