What are reaction intermediates and why are they highly reactive?
The highly reactive intermediate species formed from the reactants during the reaction are called reaction intermediates. The moment these are formed in the reaction, these get consumed. The high reactivity of reaction intermediates is due to the fact that these are charged species and moreover have an incomplete octet.
These are:
(i) Free radicals (ii) Carbocations
(iii) Carbanions (iv) Carbenes
(v) Nitrenes (vi) Arynes.