Fig. 1. (a) ORTEP view of the asymmetric unit of 1Pt·H2O at 260 K (isostructural to 1Pd·H2O) showing 50% probability displacement ellipsoids (aromatic hydrogen atoms are omitted for clarity) and (b) view along the (010) direction of a 1M·H2O (M = Pt, Pd) layer (discontinuous yellow-red and red-green lines represent host–guest and host–host H-bonds, respectively). (c) 3D supramolecular fragment of 1M·H2O (M = Pt, Pd) displaying three successive pillared layers (distinguished in pink and blue). Red spheres represent the trapped water molecules within the 1D channels.
