Table of contents

1. A Review of General Chemistry5h 5m
2. Molecular Representations1h 14m
3. Acids and Bases2h 46m
4. Alkanes and Cycloalkanes4h 17m
5. Chirality3h 39m
6. Thermodynamics and Kinetics1h 22m
7. Substitution Reactions1h 48m
8. Elimination Reactions2h 30m
9. Alkenes and Alkynes2h 9m
10. Addition Reactions3h 19m
11. Radical Reactions1h 58m
12. Alcohols, Ethers, Epoxides and Thiols2h 42m
13. Alcohols and Carbonyl Compounds2h 17m
14. Synthetic Techniques1h 26m
15. Analytical Techniques:IR, NMR, Mass Spect7h 3m
16. Conjugated Systems6h 13m
17. Ultraviolet Spectroscopy51m
18. Aromaticity2h 34m
19. Reactions of Aromatics: EAS and Beyond5h 1m
20. Phenols55m
21. Aldehydes and Ketones: Nucleophilic Addition4h 56m
22. Carboxylic Acid Derivatives: NAS2h 51m
23. The Chemistry of Thioesters, Phophate Ester and Phosphate Anhydrides1h 10m
24. Enolate Chemistry: Reactions at the Alpha-Carbon1h 53m
25. Condensation Chemistry2h 9m
26. Amines1h 43m
27. Heterocycles2h 0m
28. Carbohydrates5h 53m
29. Amino Acids4h 20m
30. Peptides and Proteins2h 42m
31. Catalysis in Organic Reactions1h 30m
32. Lipids 2h 50m
33. The Organic Chemistry of Metabolic Pathways2h 52m
34. Nucleic Acids1h 32m
35. Transition Metals6h 14m
36. Synthetic Polymers1h 49m

4. Alkanes and Cycloalkanes

Drawing Newman Projections

Organic Chemistry

4. Alkanes and Cycloalkanes

Drawing Newman Projections

Previous problemNext problem

Problem 53b

Textbook Question

Given the following structures, show the Newman projection that would result from looking down the indicated bond in the direction shown. [Orient yourself as if you were the eyeball looking down the bond. Some of the examples have been partially completed for you to fill in the rest.]
(b) <IMAGE>

Verified step by step guidance

Step 1: Identify the bond that you are instructed to look down. This is the bond between two specific atoms in the molecule, as indicated in the problem. Orient yourself as if you are the 'eyeball' looking directly along this bond.

Step 2: Determine the groups attached to the front carbon (the carbon closest to your viewpoint). These groups will be represented as three substituents radiating outward in the Newman projection.

Step 3: Determine the groups attached to the rear carbon (the carbon furthest from your viewpoint). These groups will also be represented as three substituents radiating outward in the Newman projection, but they will appear behind the front carbon.

Step 4: Arrange the substituents on both the front and rear carbons based on their spatial orientation in the molecule. Use wedge and dash notation from the original structure to determine whether groups are pointing toward or away from you.

Step 5: Draw the Newman projection by placing the front carbon as a circle with its three substituents radiating outward, and the rear carbon as a larger circle behind it with its three substituents radiating outward. Ensure the relative positions of the substituents match the original molecular structure.

Verified video answer for a similar problem:

This video solution was recommended by our tutors as helpful for the problem above

Play a video:

Was this helpful?

Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Newman Projections

Newman projections are a way to visualize the conformation of a molecule by looking straight down a bond connecting two carbon atoms. This representation helps in understanding the spatial arrangement of substituents around the bond, which is crucial for analyzing steric interactions and torsional strain in organic compounds.

Conformational Analysis

Conformational analysis involves studying the different spatial arrangements of atoms in a molecule that can be interconverted by rotation around single bonds. This analysis is essential for predicting the stability of various conformers, as certain arrangements may lead to increased steric hindrance or torsional strain, affecting the molecule's reactivity and properties.

Steric Hindrance

Steric hindrance refers to the repulsion between atoms or groups within a molecule that occurs when they are brought close together. In the context of Newman projections, understanding steric hindrance is vital for predicting which conformations are more stable, as bulky groups can create unfavorable interactions that influence the overall energy of the molecule.

Watch next

Master Introduction to Drawing Newman Projections with a bite sized video explanation from Johnny

Start learning

Related Videos

Related Practice

Textbook Question

Given the following structures, show the Newman projection that would result from looking down the indicated bond in the direction shown. [Orient yourself as if you were the eyeball looking down the bond. Some of the examples have been partially completed for you to fill in the rest.]

(l) <IMAGE>

Textbook Question

Draw Newman projections along the C3―C4 bond to show the most stable and least stable conformations of 3-ethyl-2,4,4-trimethylheptane.

Textbook Question

Draw Newman projections of the following molecules viewed from the direction of the blue arrows.

(c)

Textbook Question

For each molecule, draw the Newman projection you would observe if you looked down the C_a - C_b bond in the direction indicated.

(d) <IMAGE>

Textbook Question

Looking down the indicated bond, show the three most stable conformations and choose the one that is most stable. Be sure that the first Newman projection you show is the one you see initially (before rotation). [Why should none of your three Newman projections show eclipsed conformations?]

(b) <IMAGE>

Textbook Question

For each of the following structures, which staggered Newman projection skeleton from Assessment 3.51 should you draw first to show what is seen when looking down the indicated bond?

(d) <IMAGE>

Textbook Question

Convert each Newman projection to the equivalent line–angle formula, and assign the IUPAC name.

(c)

(d)

Textbook Question

Using Newman projections, draw the most stable conformer for each of the following:

c. 3,3-dimethylhexane, viewed along the C-3---C-4 bond

Show more practices

Download the Mobile app

Privacy

Do not sell my personal information

Accessibility

Patent notice

Sitemap

Given the following structures, show the Newman projection that would result from looking down the indicated bond in the direction shown. [Orient yourself as if you were the eyeball looking down the bond. Some of the examples have been partially completed for you to fill in the rest.](b) <IMAGE>

Key Concepts

Newman Projections

Conformational Analysis

Steric Hindrance

Watch next

Given the following structures, show the Newman projection that would result from looking down the indicated bond in the direction shown. [Orient yourself as if you were the eyeball looking down the bond. Some of the examples have been partially completed for you to fill in the rest.]
(b) <IMAGE>