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Chapter 17: Q.11. (page 641)

Question: Draw the four resonance structures for anthracene.

Short Answer

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Answer

Resonating structures of anthracene

Step by step solution

01

Resonance

A molecule is said to possess resonance when it can be represented by more than one Lewis structure.

Resonating structures are drawn by the movement of only pi or non-bonding electrons.

In all the possible representation atom鈥檚 position is unchanged.

02

Resonance structures of anthracene  

Four resonating structures are possible for anthracene.

Resonance structures of anthracene

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Most popular questions from this chapter

Question: Thymol (molecular formula C10H14O) is the major component of the oil of thyme. Thymol shows IR absorptions at 3500鈥�3200, 3150鈥�2850, 1621, and 1585 localid="1648806094089" cm-1. The H1NMR spectrum of thymol is given below. Propose a possible structure for thymol.

Question:

a. How many 蟺electrons does C contain?

b. How many 蟺electrons are delocalized in the ring?

c. Explain why C is aromatic.

Question: Give the IUPAC name for each compound.

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

Question: You have a sample of a compound of molecular formula C11H15NO2, which has a benzene ring substituted by two groups, (CH3)2N-and -CO2CH2CH3 , and exhibits the given C13 NMR. What disubstituted benzene isomer corresponds to these C13 data?
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