Pentagonal pyramidal molecular geometry

Short description: Molecular geometry

Pentagonal pyramidal molecular geometry

Examples| XeOF−5
Point group| C5v
Coordination number| 6
Bond angle(s)| 90°, 72°
μ (Polarity)| >0

In chemistry, pentagonal pyramidal molecular geometry describes the shape of compounds where in six atoms or groups of atoms or ligands are arranged around a central atom, at the vertices of a pentagonal pyramid. It is one of the few molecular geometries with uneven bond angles.[1]

AX6E1

## Examples

* XeOF−5[2]
* IOF2−5[2][3]

## References

1. ↑ Baran, Enrique J. (2008). "Mean amplitudes of vibration of molecules and ions with interhalogen bonds and related species". Journal of Fluorine Chemistry 129 (11): 1060–1072. doi:10.1016/j.jfluchem.2008.06.016. Bibcode: 2008JFluC.129.1060B.
2. ↑ 2.0 2.1 Baran, E. (2000). "Mean amplitudes of vibration of the pentagonal pyramidal XeOF−5 and IOF2−5 anions". J. Fluorine Chem. 101: 61–63. doi:10.1016/S0022-1139(99)00194-3.XeOF−5+and+IOF2−5+anions&rft.jtitle=J.+Fluorine+Chem.&rft.aulast=Baran&rft.aufirst=E.&rft.au=Baran, E.&rft.date=2000&rft.volume=101&rft.pages=61–63&rft_id=info:doi/10.1016/S0022-1139(99)00194-3&rfr_id=info:sid/en.wikibooks.org:Physics:Pentagonal_pyramidal_molecular_geometry">
3. ↑ Housecroft, Catherine E.; Sharpe, Alan G. (2005). Inorganic Chemistry (2nd ed.). Pearson Prentice-Hall. p. 485. ISBN 0130-39913-2.

Pentagonal pyramid, Wolfram MathWorld

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Molecular geometry (VSEPR)

Coordination number 2|

* Linear
* Bent

Coordination number 3|

* Trigonal planar
* Trigonal pyramidal
* T-shaped

Coordination number 4|

* Tetrahedral
* Square planar
* Seesaw

Coordination number 5|

* Trigonal bipyramidal
* Square pyramidal
* Pentagonal planar

Coordination number 6|

* Octahedral
* Trigonal prismatic
* Pentagonal pyramidal

Coordination number 7|

* Pentagonal bipyramidal
* Capped octahedral
* Capped trigonal prismatic

Coordination number 8|

* Square antiprismatic
* Dodecahedral
* Bicapped trigonal prismatic

Coordination number 9|

* Tricapped trigonal prismatic
* Capped square antiprismatic

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