In order to detect alkane crystallization, we acquired 2 H spectra in the relevant temperature range with a much larger number of scans (up to 81920, Figure ). A close look at these spectra reveals the co-existence of liquid and crystalline (58 and 53 • C) or liquid and rotator phase alkane (61.0, 60.5 and 59.5 • C) in the transition range of bulk C30d.