Fig. 2. (a) Synthetic schemes of the homometallic clusters [(C)(AuI-BIPc)6](BF4)2 (5) and [(C)(AuI-BIPc2)6](BF4)2 (6), and heterometallic clusters [(C)(AuI-BIPc)6AgI3(CH3CN)3](BF4)5 (3) and [(C)(AuI-BIPc2)6Ag4(CH3CN)2](BF4)6 (4). (b) Molecular structure of cluster 3. (c) A simplified scheme showing the structure of cluster 3. C^N represents ligand BIPc. (d) Molecular structure of cluster 4. (e) A simplified scheme showing the structure of cluster 4. N^C^N represents ligand BIPc2. Uncoordinated pyridyl groups are highlighted by dashed blue cycles. (f) Comparison of structures of bicapped octahedral CAuI6AgI2 in cluster 2, triangular frustum-shaped CAuI6AgI3 in cluster 3, and tetrahedral CAuI6AgI4 in cluster 4. The length of the edge of each structure is shown.
