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As a high school student, I am curious whether there are any compounds with pentagonal pyramidal molecular geometry. I know that most compounds having hexacoordinated central atom and having $\sigma = 6$ and $\mathrm{lp} = 1$ $(\ce{XeF6},$ $\ce{IF6-})$ have either capped octahedral or distorted octahedral shape, or they have perfect octahedral shape $(\ce{ICl6-},$ $\ce{SeF6^2-}),$ where the lone pair goes to the stereochemically inactive orbital.

Are there any compounds hexacoordinated central atom and $\sigma = 6$ and $\mathrm{lp} = 1$ which have pentagonal pyramidal geometry?

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