Explain the type of elecctromeric effect
Answers
Electromeric effect refers to a molecular polarizability effect occurring by an intramolecular electron displacement (sometimes called the 'conjugative mechanism' and, previously, the 'tautomeric mechanism') characterized by the substitution of one electron pair for another within the same atomic octet of electrons.
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What is the electromeric effect?
Originally Answered: What is electromeric effect?
Electromeric effect:
Electromeric effect is a temporary effect and observed only in organic compounds with multiple bonds in the presence of an attacking reagent.
Electromeric effect can be defined as the complete transfer of shared pair of pi electrons of multiple bonds to one of the atoms in presence of an attacking reagent.
+E effect: In the positive electromeric effect the pi electrons of the multiple bond are transferred to that atom to which the attacking reagent is bonded.
-E effect: When the pi electrons of the multiple bond are transferred to the atom to which the attacking reagent does not get attached is called the negative electromeric effect.
For example in R2 --C==O when an electrophile is added, it forms R2--C(+)==O(-).