The almost identical temperature profile is imaged within about DT=150 K for [TEA-d16][OMs] compared to about DT=250 K for [TEA-d1][OMs]. The non-averaged static Q0 is higher and reached at much higher temperatures compared to the case when only the ND group is deuterated. The lowest value of the effective Qeff is consequently higher too, and is reached by about 50 K below the similar minimum for the partially deuterated cation.