During crystallization of samples of c-P6•T6, over a decade ago, besides the crystals that provided the published structure P6-I, it was reported that a second polymorph with hexagonal symmetry was persistently observed. The structure of this other polymorph could not be determined because the lack of long-range order in one direction resulted in essentially no diffraction at certain orientations of the crystal. However, the data collected at that time were sufficient to determine unit cell dimensions (a, b = 49.85 Å, c = 29.46 Å a = b = 90°, g = 120°).