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Chapter 17: Q.17. (page 641)

Question: Draw the seven resonance structures for the tropyllium cation.

Short Answer

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Answer

Step by step solution

01

Resonance

In certain molecules or ions, the bonding occurs by combining different contributing structures or resonance structures into a hybrid structure. Resonance has a particular value for delocalization.

02

Example for resonance

An example for resonance using benzene is shown below:

Resonance structures of benzene

Different resonance structures can be obtained by shifting the bonds and the charges within the structure. The resonance structure of tropyllium is shown below:

Resonance structure of tropyllium

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Most popular questions from this chapter

Question: Which compounds are aromatic? For any compound that is not aromatic, state why this is so.

Question: Draw a stepwise mechanism for the following reaction.

Give the IUPAC name for each compound.

(a)

(b)

(c)

(d)

Question: Which of the diethylbenzene isomers (ortho, meta, or para) corresponds to each set of C13NMR spectral data?

[A] C13NMR signals: 16, 29, 125, 127.5, 128.4, and 144 ppm

[B] C13 NMR signals: 15, 26, 126, 128, and 142 ppm

[C] C13NMR signals: 16, 29, 128, and 141 ppm

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