Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 17: Q.20. (page 641)

Question: Use the inscribed polygon method to show why the following cation is aromatic.

Short Answer

Expert verified

Answer

Step by step solution

01

Cyclopropenyl cation

Cyclopropenyl cation consists of two πelectrons and is planar. So, it obeys Huckel’s rule of aromaticity for 4n+2πelectrons, where n=0.

02

Inscribed polygon method

The inscribed polygon method can be used to find whether a compound is aromatic or not.

03

To show why cyclopropenyl cation is aromatic

In using the inscribed polygon method, always draw the vertex pointing downward.

2πelectrons are present, and all the bonding molecular orbitals are filled. So, it is aromatic.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Question: Which of the following heterocycles are aromatic?

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

Question: Estimate where the protons bonded to the sp2hybridized carbons will absorb in the 1 H NMR spectrum of each compound.

Question: Use the inscribed polygon method to show the pattern of molecular orbitals in cyclooctatetraene.

a. Label the MOs as bonding, antibonding, or nonbonding.

b. Indicate the arrangement of electrons in these orbitals for cyclooctatetraene, and explain why cyclooctatetraene is not aromatic.

c. Treatment of cyclooctatetraene with potassium forms a dianion. How manyπelectrons does this dianion contain?

d. How are the πelectrons in this dianion arranged in the molecular orbitals?

e. Classify the dianion of cyclooctatetraene as aromatic, antiaromatic, or not aromatic, and explain why this is so.

Question: How many C13 NMR signals does C60 exhibit?
See all solutions

Recommended explanations on Chemistry Textbooks

The Earths Atmosphere

Read Explanation

Inorganic Chemistry

Read Explanation

Physical Chemistry

Read Explanation

Kinetics

Read Explanation

Chemical Analysis

Read Explanation

Nuclear Chemistry

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free