Figure 4
Schematic diagrams showing the π–π interactions between dmph groups in (II ). (a) The A′–A interaction, with primed labels denoting atoms at the symmetry position (2 − x, 1 − y, 2 − z); (b) the A–B interaction; (c) the B–C interaction; (d) the C–C′′ interaction, with doubly primed labels denoting atoms at the symmetry position (2 − x, 1 − y, 1 − z). |