A highly symmetric diamond-like assembly of cyclotricatechylene-based tetrahedral cages

摘要

The combination of six Cu(Ⅱ) centres with four cyclotricatechylene (ctc~6-) ligands generates large (Cu_6ctC_4)~12- cages with the topology of the tetrahedron. The anionic tetrahedral cages are cemented together, triangular face to triangular face, by Na ~+ cations together with water molecules to generate a highly symmetric diamond-like assembly (space group Fd-3m, the same as that of diamond itself) whose adamantane-like units have an iodide ion at the centre of every cyclohexane-Iike face.