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. Author manuscript; available in PMC: 2010 Aug 10.
Published in final edited form as: J Magn Reson. 2005 Dec 15;179(1):92–104. doi: 10.1016/j.jmr.2005.11.011

Fig. 1.

Fig. 1

Recovery curves at 60 K for 2.5 mM 1 and 7 in 2:1 toluene/chloroform solution, obtained by (A) saturation recovery at g = 2.05 using 10900 scans and 900 points, (B) saturation recovery at g = 2.09 using 98100 scans and 1977 points, (C) inversion recovery at g = 2.05 using 200 scans and 256 points, (D) inversion recovery at g = 2.09 using 300 scans and 256 points. (A, B) Dashed lines are fits calculated for a distribution of relaxation rates. The y-axes of the plots are EPR signal amplitude in arbitrary units. (C, D) Dashed lines are fits calculated for a single exponential. For the inversion recovery curves the fit lines obtained for a distribution of exponentials were indistinguishable from the experimental data.