Fig. 2. Crystallographic structure of compound 1b.

a unit cell of 1b at 260 K (full crystallographic data for all measured samples are provided in Supplementary Tables); b the structure of 1b is made up of 2D metal-cyanide-metal sheets (here in blue), intercalated by the π−π stacked axial ligands of the sheets above and below. Hydrogen atoms and water molecules were omitted for clarity. All distances are shown in Ångström (Å).