Fig. 3. (a) View of 1_lp along [001]. The guest-accessible space27 is shown as red dots while type A and B CO₂ molecules (in spacefilling representation) are coloured green and blue, respectively. (b) and (c) Perspective views of the pseudo-slipped-parallel arrangement of the CO₂ molecules with d_C···C separations indicated. Hydrogen atoms are omitted for clarity.