Recently, there has been increased interest in using H-2 MAS NMR spectroscopy as an alternative to 'static' quadrupolar-echo NMR for studying dynamics in solids. Here we show that the phenomenon of enhanced spin diffusion as a result of n = 0 rotational resonance can lead to observation of a common spin-lattice (T-1) relaxation time for all deuterons. Thus, if rapidly relaxing groups are present, such as -CD3 or -ND3+ groups, then even highly immobile deuterons can exhibit T, relaxation times of similar to 1 s under MAS conditions, greatly facilitating data acquisition. (c) 2007 Elsevier B.V. All rights reserved.