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

Naming Cycloalkanes

Organic Chemistry

4. Alkanes and Cycloalkanes

Naming Cycloalkanes

Previous problemNext problem

6:04 minutes

Problem 70d

Textbook Question

Draw skeletal structures for the following:
d. propylcyclopentane

Verified step by step guidance

Start by identifying the main structure of the compound. In this case, the main structure is 'cyclopentane,' which is a cyclic alkane with five carbon atoms arranged in a ring. Draw a pentagon to represent the cyclopentane ring.

Next, identify the substituent group attached to the cyclopentane ring. The substituent is 'propyl,' which is a three-carbon alkyl group. The structure of the propyl group can be written as CH₃-CH₂-CH₂-.

Attach the propyl group to one of the carbon atoms in the cyclopentane ring. Since no specific position is mentioned, you can attach it to any carbon atom in the ring. Ensure that the attachment does not violate the valency of carbon (each carbon should have four bonds).

Simplify the structure into a skeletal formula. In a skeletal structure, carbon atoms are represented by vertices, and hydrogen atoms bonded to carbon are implied but not shown explicitly. Draw the cyclopentane ring as a pentagon and the propyl group as a three-line chain extending from one vertex of the pentagon.

Double-check the structure to ensure that it accurately represents propylcyclopentane. Verify that the cyclopentane ring has five carbons, the propyl group has three carbons, and all carbons have the correct number of bonds.

Verified video answer for a similar problem:

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

Video duration:

Play a video:

Was this helpful?

Key Concepts

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

Skeletal Structures

Skeletal structures, or line-angle formulas, are simplified representations of organic molecules where carbon atoms are implied at the ends of lines and at intersections. Hydrogen atoms attached to carbons are usually omitted for clarity. This notation allows chemists to visualize the molecular framework quickly, focusing on the connectivity and arrangement of atoms rather than individual bonds.

Cycloalkanes

Cycloalkanes are a class of hydrocarbons characterized by carbon atoms arranged in a ring structure. They follow the general formula CnH2n, where 'n' is the number of carbon atoms. Understanding cycloalkanes is essential for drawing structures like propylcyclopentane, as it involves recognizing the cyclic nature of the molecule and how substituents, such as propyl groups, attach to the ring.

Substituents in Organic Chemistry

Substituents are atoms or groups of atoms that replace hydrogen atoms in a hydrocarbon chain or ring. In the case of propylcyclopentane, the propyl group (C3H7) is a substituent on the cyclopentane ring. Recognizing how substituents affect the structure and properties of the molecule is crucial for accurately drawing and understanding the skeletal structure.