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Coordination Number 9

-Tricapped trigonal prismatic

This structure type is very common for the nine-coordinate geometry. One historically important example is the ReH₉^2- ion

Here are some different views of the same structure. In the first model, you see the structure with just the bonds that exist between the central atom and the ligand atoms.	The second structure shows the bonds and the connections (which are usually not bonds) between the ligand atoms.	The third picture shows the structure without the bonds but with the connections between the ligand atoms showing the polyhedron formed by the ligand atoms.

[ReH9]2-	Picture with the polyhedron