to overestimate the experimental DR times by a factor of ~2. The simulated slower than experimental relaxation times fails to correctly describe the viscosity coupling of the diffusive dynamics, and as a result, the simulated DR activation energies show an anion dependence reverse of that found in measurements. An additional support to this view comes from a previous simulation study 105 which reported a much weaker decoupling between the centre-ofmass diffusion and viscosity than reported in experiments.