What is Electromeric effect?
Answers
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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(-).
Electromeric Effect can be observed only in organic compounds which contain multiple bonds. It is a temporary effect that arises when the compound is subjected to an attacking reagent.
What is the Electromeric Effect?
The instantaneous formation of a dipole in the molecule of an organic compound due to the complete transfer of shared pi electron pairs to one of the atoms under the influence of an attacking reagent is referred to as the Electromeric effect.
This effect can be observed in organic compounds that contain at least one multiple bond. When the atoms participating in this multiple bond come under the influence of an attacking reagent, one pi bonding pair of electrons is completely transferred to one of the two atoms.
The electromeric effect is a temporary effect that remains as long as the attacking reagent is present and exposed to the organic compound. Once this attacking reagent is removed from the system, the molecule that was polarized goes back to its original state.
Answer:
Electromeric effect refers to a molecular polarizability effect occurring by an intramolecular electron displacement characterized by the substitution of one electron pair for another within the same atomic octet of electrons.
Explanation:
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(-).