Electromeric Effect In Organic Compound

Electromeric Effect In Organic Compound:-

                                               Electromeric Effect is temporary delocalization of π-electrons in organic compounds which are containing multiple covalent bonds like double bond and triple bond it is only a temporary effect and it occurs only when a reagent is added or it is the movement of electrons from one organic atom to another as a reagent attacks on a π bond called Electromeric Effect.

                                              

When reagent attack on molecule

This is a temporary effect in the presence of reagent. When the reagent is removed the molecule revert back to its original position.

Electromeric Effect in organic chemistry classified into two types:

1. Positive Electromeric Effect
2. Negative Electromeric Effect

Positive Electromeric Effect:-
                                   If the attacking reagent  is an electrophile, the π−electrons of the multiple bonds are transferred( to gain the stability of ions) towards the positively charged atom to get attached is called Positive Electromeric Effect.

               

Negative Electromeric Effect:-   

                                          If the attacking reagent  is a nucleophile, the π−electrons of the multiple bonds are transferred (to gain the stability of ions) away from the attacking reagent the negative charged atom to get attached is called Negative Electromeric Effect.