Are there any compounds with pentavalent carbon?
Scientists first prepared methanium ion in 1950.
It is a fluxional ion, in which the
In the animation above, the black ball in the middle is the carbon atom, and the red and white ones are hydrogen atoms. The blue clouds represent the electron pairs.
A theoretical pentacoordinate carbon
Theoretical chemists have predicted that
The bonds are not ordinary σ bonds. Instead, they involve various σ and π orbitals involving the whole molecule.
Another theoretical possibility is