Figure 3
The orientation of the molecular mirror planes, defined by atoms C1, C14 and O1, relative to the plane of the four hydroxyl O atoms in (a) the β form of (I) at 100 K and (b) the α form of (I) at 200 K. Hydrogen bonds are shown as broken lines [symmetry code: (i) 1 − x, 1 − y, 1 − z]. |