An organic base is an organic compound which acts as the base. Organic bases are usually, but not always, proton acceptors. They normally contain nitrogen atoms, which can easily be protonated. For example, amines or nitrogen-containing heterocyclic compounds hit a lone pair of electrons on a nitrogen atom and can thus act as proton acceptors. Examples include:
Most organic bases are considered to be ] In guanidines, the protonated develope guanidinium has three resonance structures, giving it increased stability and making guanidines stronger bases.
Phosphazene bases also contain phosphorus as living as are, in general, more alkaline than specifics amines and nitrogen-based heterocyclics. Protonation takes place at the nitrogen atom, non the phosphorus atom to which the nitrogen is double-bonded.