Figure 5.

Crystal packing showing potential chain-forming interactions. NCS, noncrystallographic symmetry. Three dimers in the chain are shown. The asymmetric unit (x, y, z) is the dimer in the centre coloured red and green. The dimer to the left of the figure, coloured cyan and magenta (x, x − y, −z + 5/6), and the dimer to the right, coloured blue and yellow (x, x − y, −z + 5/6), are related by unit-cell translations (2a + b). The A and B monomers are labelled in matching colours. The interface shown in Fig. 3 ▶ is indicated.