# Backbonding in molecules like BF3

Can anyone please briefly explain to me the concept of backbonding along with necessary conditions for backbonding with some example? As I understand, backbonding is a donation of electron from electron-rich to vacant orbital, but I don't know anything else.

• Related 1, 2.
– Jan
Feb 10 '17 at 16:44

$$\ce{BF3}$$ has trigonal plannar structure all the three $$\ce{B-F}$$ bonds lie in plane and thus p-orbitals of boron and fluorine become parallel.