pentagonal planar molecular geometry
{{refimprove|date=June 2016}}
{{Infobox molecular geometry
| Examples=Tetramethylammonium pentafluoroxenate
| Image_File=Pentagonal-planar-3D-balls.png
| Symmetry_group=D5h
| Atom_direction=5
| Bond_angle=72°
| mu=0
}}
In chemistry, the pentagonal planar molecular geometry describes the shape of compounds where five atoms, groups of atoms, or ligands are arranged around a central atom, defining the vertices of a pentagon.
Examples
The only two pentagonal planar species known are the isoelectronic (nine valence electrons) ions Tetramethylammonium pentafluoroxenate (pentafluoroxenate(IV)) and {{chem2|[IF5](2−)}} (pentafluoroiodate(III)).{{cite book|last1=Housecroft |first=C. E. |last2=Sharpe |first2=A. G. |date=2004 |title=Inorganic Chemistry |edition=2nd |publisher=Prentice Hall |page=498 |ISBN=978-0130399137}} Both are derived from the pentagonal bipyramid with two lone pairs occupying the apical positions and the five fluorine atoms all equatorial.
References
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{{MolecularGeometry}}
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