Table 1.
solute | solvent | C″Ram | Clocal | Δlocal | βa | CA,g | CA,gb | βc | CA,g (theory) | Ratioh |
---|---|---|---|---|---|---|---|---|---|---|
×106 | (K) | ×1016 | β=0.67 | ×1016 | ||||||
tempone | glycerol | 0.57 | 3.7 | 1090 | 0.61 | 7.1 | 8.1 | 9.3 | 0.86 | |
tempone | WGf | 0.57d | 3.5 | 1090 | 0.66 | 7.5 | 7.6 | 0.64 | 9.3 | 0.82 |
15N-tempone | WGf | 0.57d | 3.5 | 1090 | 0.66 | 6.2 | 6.3 | 0.63 | 7.0 | 0.90 |
tempone-d16 | WGf | 0.51d | 3.4 | 1200 | 0.63 | 7.1 | 7.7 | 0.62 | 9.3 | 0.82 |
tempol | WGf | 0.38d | 3.5 | 1180 | 0.71 | 9.8 | 9.0 | 0.64 | 9.3 | 0.97 |
tempol-d17 | WGf | 0.32d | 3.4 | 1250 | 0.72 | 8.8 | 8.0 | 0.64 | 9.3 | 0.86 |
15N-tempol-d17 | WGf | 0.31d | 3.4 | 1275 | 0.69 | 6.9 | 6.5 | 0.64 | 6.9 | 0.94 |
CTPO | WGf | 0.35d | 3.5 | 1225 | 0.68 | 8.5 | 8.3 | 0.63 | 8.9 | 0.93 |
CTPND | WGf | 0.34d | 3.5 | 1260 | 0.70 | 8.0 | 7.4 | 0.66 | 8.9 | 0.83 |
tempo | 3-methyl-pentane | 0.79 | 3.5e | 958e | 0.61 | 10.0 | 9.2 | 1.08 | ||
tempone | OTP | 1.17 | 4.1e | 990e | 0.37 | 11.8 | 9.2 | 1.28 | ||
tempone | 1-propanol | 1.12 | 4e | 990e | 0.62 | 14. | 9.2 | 1.52 | ||
tempone | decalin | 1.14 | 4.0e | 990e | 0.53 | 9.8 | 9.4 | 1.05 | ||
tempone (Q)g | decalin | 1.14 | 4.0e | 990e | 0.53 | 58.0 | 14.4 | 4.02 | ||
tempone-d16 | decalin | 0.98 | 3.3e | 1074e | 0.55 | 11.0 | 9.4 | 1.17 | ||
15N-tempone | decalin | 1.26 | 4.4e | 990e | 0.50 | 8.8 | 7.0 | 1.25 | ||
TPHIO | decalin | 0.16 | 3.5e | 2050e | 0.53 | 4.5 | 7.7 | 0.59 | ||
TPHIO (Q)g | decalin | 0.16 | 3.5e | 2050e | 0.53 | 15.6 | 12.7 | 1.23 |
β was estimated by simulation of all processes.
The average β = 0.67 for nitroxyl in water:glycerol was used for estimation of CA,g.
β estimated from the tumbling process (1/T1(water glycerol)-1/T1(glycerol)), as in Figure 9.
The value above the glass transition temperature.
Clocal and Δlocal for these solute/solvent combinations were estimated from nitroxyls in sucrose octaacetate.
WG is water:glycerol
Except for the rows identified with (Q), experiments were performed at X-band.
CA,g (experimental)/CA,g (theory) including β.