To determine the phase behaviour spanned by pseudo-octahedral cages, we implemented HPMC simulations on hard octahedra with different directional interactions introduced through patches on the polyhedra. The form of these interactions is based on the patchy particle potential described in Ref. 34. As shown in Fig. (a), a patch was added to the center of each facet, where the different colour patches represent the reduction of symmetry of the octahedra due to the chemical make up of the cages (i.e. the alternation of facets between windows or arenes). To include the likely degrees of freedom that occur between POCs, the patches on the hard octahedra were introduced via an interaction term, V ij , which contains three components; an attractive Lennard-Jones potential V LJ , an angular modulation term