/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q49 Question: Draw Newman projection... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 3: Q49 (page 190)

Question: Draw Newman projections along the C3-C4bond to show the most stable and least stable conformations of 3 ethyl-2,4demethylheptane.

Short Answer

Expert verified

Answer

Step by step solution

01

Newman projection

Newman projections are often used in drawing conformations. In Newman鈥檚 projection, one views the C-C bond end on along the axis of connection. The front carbon is represented by the intersection of bonds, while the rear carbon appears as a circle.

02

Using Newman projections to draw the most stable conformer

The two bulky groups (propyl and isopropyl) are anti-periplanar in most stable conformations, while in the least stable, the two bulky groups (propyl and isopropyl) are syn-periplanar.

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.

Over 30 million students worldwide already upgrade their learning with 91影视!

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

(a) Draw the two chair conformations of cis-1,3-dimethylcyclohexane, and label all the positions as axial or equatorial.

(b) Label the higher-energy conformation and the lower-energy conformation.

(c) The energy difference in these two conformations has been measured to be about23鈥塳闯鈥�(5.4鈥塳肠补濒)per mole. How much of this energy difference is due to the torsional energy of gauche relationships?

(d) How much energy is due to the additional steric strain of the1,3-diaxial interaction?

Draw the structure and give the molecular formula for each of the following compounds.

(a) 1-ethyl-3-methylcycloheptane

(b) isobutylcyclohexane

(c) cyclopropylcyclopentane

(d) 3-ethyl-1,1-dimethylcyclohexane

(e) 3-ethyl-2,4-dimethylhexane

(f) 1,1-diethyl-4-(3,3-dimethylbutyl)cyclohexane

Draw the structure that corresponds with each name.

(a)3-ethyloctane

(b)4-isopropyldecane

(c)sec-butylcycloheptane

(d)2,3-dimethyl-4-propylnonane

(e)2,2,4,4-tetramethylhexane

(f)trans-1,3-diethylcyclopentane

(g)cis-1-ethyl-4-methylcyclohexane

(h)isobutylcyclopentane

(i)tert-butylcyclohexane

(j)pentylcyclohexane

(k)cyclobutylcyclohexane

(l)cis-1-bromo-3-chlorocyclohexane

Give IUPAC names for the following cycloalkanes.

(a)

(b)

(c)

Question: Convert each Newman projection to the equivalent line-angle formula, and assign the IUPAC name.
See all solutions

Recommended explanations on Chemistry Textbooks

Chemical Analysis

Read Explanation

Organic Chemistry

Read Explanation

Making Measurements

Read Explanation

Nuclear Chemistry

Read Explanation

Ionic and Molecular Compounds

Read Explanation

Chemistry Branches

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.