Sn13-Oxo Clusters with an Open Hollow Structural Motif and Decorated by Different Functional Ligands.

The first open hollow Sn13-oxo cluster family has been successfully prepared and characterized. These Sn13 clusters contain a {Sn7} moiety that is similar to the basic structure unit of rutile SnO2. Interestingly, the Sn13 clusters show labile coordination sites on the edge, which could be functionalized by different ligands. With the different decorated types of functionalized ligands, the open hollow Sn13 clusters present different structural details and framework diameters. The presented results provide a new open hollow structural motif of tin-oxo clusters and also a good platform for their ligand functionalization.