Figure 7
Packing arrangement of ZIF-8 at (a) ambient pressure and (b) at 1.47 GPa. ZnN4 tetrahedra are represented as solid green polyhedra (image adapted from Moggach et al., 2009). Colour key: C, dark grey; H, light grey. (c) Semilog plot of N2 adsorption on ZIF-8 at 77 K: experimental, circles; and simulated data on ambient pressure structure, ZIF-8, closed triangles and high-pressure structure, ZIF-8HP, open triangles. Reprinted from Fairen-Jimenez et al. (2011). Copyright (2011) American Chemical Society. (d) Overlay of ZIF-8 loaded with N2 (blue) and the 1.47 GPa structure determined by Moggach et al. (2009) (red). Reprinted from Fairen-Jimenez et al. (2011. Copyright (2011) American Chemical Society. |