Does Resonance Occur in Nitrobenzene Despite Having One Pi Bond?

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The discussion centers on the concept of resonance in relation to benzene (C6H6) and its interaction with a positive charge. It highlights that benzene exhibits a negative charge within the ring and a positive charge externally. The presence of pi electrons in the NO2 group is noted to be attracted to benzene, potentially affecting bond dynamics. The question raised concerns whether resonance occurs when considering two bonds without breaking them, suggesting confusion about the relationship between pi bonds and resonance. The response emphasizes that resonance is a common phenomenon in conjugated pi bonds, indicating its relevance in this context.
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"My teacher had mentioned that resonance would occur here due to the presence of a positive charge if benzene is attached. However, if we consider two bonds without breaking them, there will be one pi bond. So, will there be no resonance due to it?"
 

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Though I am a layman on quantum chemistry, benzene (C6H6) is negatively charged inside the ring, and positively charged on the outside. The Pi electrons in NO2 tends to be attracted to benzen and have some tendency to break. The resonance would be incorborated into total bond strength.
 
this_is_harsh said:
"My teacher had mentioned that resonance would occur here due to the presence of a positive charge if benzene is attached. However, if we consider two bonds without breaking them, there will be one pi bond. So, will there be no resonance due to it?"
Your question is not clear. Could you rephrase it?

Resonance is ubiquitous in conjugated pi bonds.
 

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