Pentagonal bipyramid molecular geometry
- Pentagonal bipyramid molecular geometry
In chemistry a pentagonal bipyramid (or dipyramid) is a molecular geometry with one atom at the centre with seven ligands at the corners of a pentagonal dipyramid. A perfect pentagonal bipyramid belongs to the molecular point group "D5h" . The pentagonal bipyramid is a case where bond angles surrounding an atom are not identical (see also Trigonal bipyramid molecular geometry). [Cotton, F. Albert; Wilkinson, Geoffrey; Murillo, Carlos A.; Bochmann, Manfred (1999). Advanced Inorganic Chemistry (6th Edn.) New York:Wiley-Interscience. ISBN 0-471-19957-5.] Other seven coordinate geometries include the mono-capped octahedron and mono-capped trigonal prism. A variety of transition metal complexes adopt heptacoordination, but the symmetry is usually lower than D5h.
Examples
Iodine heptafluoride
References
External links
* [http://www.ch.ic.ac.uk/rzepa/bpr/Figure-5.html] - Images of IF7
* [http://www.3dchem.com/ 3D Chem] - Chemistry, Structures, and 3D Molecules
* [http://www.iumsc.indiana.edu/ IUMSC] - Indiana University Molecular Structure Center
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