Arrhenius parameters of 2, 2-dilute, and 2@0.35T extracted using eqn (2).

Compound	2	2@0.35T	2-dilute
Relaxation process 1
A (S−1 T−2 K−1)		114
τ QTM (s)	0.0116	0	0.157
C (s−1 K−n)	0.00132	0.000261	0.00432
n	4.92	6.47	5.29
τ o (s)	1.56 × 10−10	2.88 × 10−11	2.88 × 10−11
U (cm−1)	110	129	121
Relaxation process 2
A (S−1 T−2 K−1)
τ QTM (s)	0.000593		0.000755
C (s−1 K−n)	0.251		0.00679
n	4.25		6.08
τ o (s)	2.02 × 10−12		6.21 × 10−13
U (cm−1)	131		126