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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’s 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: Propose a structure consistent with each set of data.

a. C10H14: IR absorptions at 3150-2850,1600, and 1500cm-1

b. C9H12: C13NMR signals at 21, 127, and 138 ppm

c. C8H10: IR absorptions at 3108-2875cm-1, 1606, and 1496cm-1

Question: What is the structure of a compound of molecular formula C10H14O2 that shows a strong IR absorption at 3150–2850 role="math" localid="1648710122642" cm-1and gives the following 1 H NMR absorptions: 1.4 (triplet, 6 H), 4.0 (quartet, 4 H), and 6.8 (singlet, 4 H) ppm

Question: Explain the observed rate of reactivity of the following 2°alkyl halides in an SN1reaction.

Question:

a. Draw all reasonable resonance structures for pyrrole and explain why pyrrole is less resonance stabilized than benzene.

b. Draw all reasonable resonance structures for furan and explain why furan is less resonance stabilized than pyrrole.

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