Figure 1

(a) The structure fragment of USTC-6 showing the coordination environments of Cu(II) ions and the ligand. A view of the nanoribbon with retained Cu(3)O5 units along the (b) a axis and (c) b axis. The hydrogen bonding and isolated water molecules are omitted for clarity. (d) A view of the layered structure of USTC-6 along the c axis. The hydrogen bonds are indicated by dotted lines. The Cu, C, O and F atoms are drawn in blue, orange, red and green, respectively. All of the hydrogen atoms were omitted, and only one orientation of the disordered O2w remains for clarity.