Figure 7
Part of the crystal structure of COMGUG (Voliotis et al., 1984), showing the linking of hydrogen-bonded R22(14) dimers into a π-stacked chain along [100]; the coordinates and the atom labels are those used in the original report. Atoms marked with an asterisk (*), a hash (#) or a dollar sign ($) are at the symmetry positions (1 − x, 1 − y, 1 − z), (−x, 1 − y, 1 − z) and (−1 + x, y, z), respectively. |