![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/4/44/Phosphorane.svg/640px-Phosphorane.svg.png&w=640&q=50)
Phosphoranes
From Wikipedia, the free encyclopedia
A phosphorane (IUPAC name: λ5-phosphane) is a functional group in organophosphorus chemistry with pentavalent phosphorus. Phosphoranes have the general formula PR5.
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/4/44/Phosphorane.svg/220px-Phosphorane.svg.png)
Phosphoranes of the type PX5 adopt a trigonal bipyramidal molecular geometry with the two apical bonds longer than the three equatorial bonds. Hypervalent bonding is described by inclusion of non-bonding MOs, as also invoked for the closely related molecule phosphorus pentafluoride.[1]