I want to learn about the Mesomeric effect

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In summary, the Mesomeric effect, also known as resonance effect, is a phenomenon that involves the delocalization of electrons between two or more atoms in a chemical bond, resulting in a stabilized molecule. The strength of this effect is influenced by factors such as electronegativity, distance between atoms, and number of resonance structures. It can impact the reactivity of a molecule by either stabilizing or destabilizing electrons. Some examples of molecules that display this effect are benzene, nitrobenzene, and carboxylic acids. The Mesomeric effect is different from the inductive effect in that it involves delocalization of electrons and is stronger over longer distances.
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samy4408
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I am looking for a source about the mesomeric effect ,i couldn't find anything satisfactory, so if you have any suggestion?
 
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Thousands of easily googlable sources, no idea what you don't like about them so no way to point you to the one that will be better for you.
 
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Second thread on the same subject merged into the original thread
Is it any relationship between the mesomeric effect resonance structure and formal charges?
 
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samy4408 said:
Is it any relationship between the mesomeric effect resonance structure and formal charges?
What HAVE you found so far?
 

FAQ: I want to learn about the Mesomeric effect

What is the Mesomeric effect?

The Mesomeric effect, also known as resonance effect, is a phenomenon in chemistry where electrons are delocalized within a molecule, resulting in the stabilization of the molecule's structure.

How does the Mesomeric effect affect the reactivity of a molecule?

The Mesomeric effect can either increase or decrease the reactivity of a molecule, depending on the direction of electron delocalization. If the effect stabilizes the molecule, it will decrease reactivity, and if it destabilizes the molecule, it will increase reactivity.

What are some examples of molecules that exhibit the Mesomeric effect?

Some common examples include benzene, nitrobenzene, and carboxylic acids. These molecules have delocalized electrons, giving them greater stability and unique chemical properties.

How is the Mesomeric effect different from the Inductive effect?

The Mesomeric effect involves the delocalization of electrons, while the Inductive effect involves the shifting of electron density along a chain of atoms. The Mesomeric effect is also stronger and more long-range compared to the Inductive effect.

Can the Mesomeric effect be predicted for a given molecule?

Yes, the Mesomeric effect can be predicted based on the structure and electronic configuration of the molecule. Generally, molecules with conjugated systems and lone pairs of electrons are more likely to exhibit the Mesomeric effect.

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