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. Author manuscript; available in PMC: 2015 Oct 1.
Published in final edited form as: J Magn Reson. 2014 Sep 9;247:81–87. doi: 10.1016/j.jmr.2014.08.014

Table 1. Contributions to Spin-Lattice Relaxation of Semiquinones at 293 K in Fluid Solution.

Semiquinone Solvent τR (ps)a, (cslip) Δloc (K)b Cloc (s-1) τsolvent (ps) Csolvent (s-1)
25DTBSQ C2H5OH 40 (0.37) 500 0.18×106 70 2.4×1015
C2H5OD 40 (0.37) 500 0.18×106 70 1.0×1015
C2D5OD 40 (0.37) 500 0.18×106 70 <5×1013
CH3OH 20 (0.36) 500 0.18×106 35 2.4×1015
26DTBSQ C2H5OH 40 (0.37) 500 0.18×106 70 2.6×1015
C2H5OD 40 (0.37) 500 0.18×106 70 1.2×1015
TMBSQ CH3OH 25 (0.44) 500 0.10×106 35 2.4×1015
CH3OD 25 (0.44) 500 0.10×106 35 1.2×1015
CD3OD 25 (0.44) 500 0.10×106 35 <5×1013
a

g = 2.0065, 2.0052, 2.0023 [15]

b

Fixed at the value obtained by variable temperature studies [7].