Calculate the degree of unsaturation (DU) for the molecule shown below. HO Hill... |||| OH

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
icon
Related questions
icon
Concept explainers
Question
**Title: Calculating the Degree of Unsaturation for a Complex Molecule**

---

**Objective:**
Determine the degree of unsaturation (DU) for the given organic molecule. The degree of unsaturation indicates the total number of π bonds and rings in the structure, helping to identify the molecule's possible structure.

**Molecule Analysis:**

- **Structure Description:**
  - The molecule contains four ring structures, including three cyclohexane and one aromatic benzene ring.
  - The benzene ring contributes significant unsaturation due to its alternating double bonds.
  - Hydroxyl groups (-OH) are attached at two different positions on the molecule, but these groups do not directly affect the degree of unsaturation calculation.
  - Various stereochemistry indicators (wedges and dashed lines) indicate the three-dimensional arrangement of certain hydrogen atoms (H).

**Calculating the Degree of Unsaturation:**

1. **Identify Rings and Double Bonds:**
   - The benzene ring alone accounts for 4 degrees of unsaturation (3 for the double bonds and 1 for the ring itself).
   - The presence of other rings adds an additional 3 degrees of unsaturation (1 for each additional ring).

2. **Formula for Degree of Unsaturation:**
   - DU = C - H/2 + N/2 + 1, where C is the number of carbons, H is the number of hydrogens, and N is the number of nitrogens (not present in this structure). Alternatively, you can count directly from the structure by identifying rings and double bonds.

3. **Conclusion:**
   - The total degree of unsaturation for this molecule is 7, considering the benzene ring, the additional three rings, and ignoring any other possible multiple bonds since they are not visibly present outside of the benzene ring.

**Visual Aid:**

- **Diagram:**
  - The structural diagram provided shows the complex arrangement of the atoms including cyclic and aromatic features that contribute to the molecule's degree of unsaturation.
  
Understanding the degree of unsaturation is crucial in deducing structural information about complex organic compounds, allowing chemists to infer possible functional groups and connectivity within the molecule based on its formula or visual structure.
Transcribed Image Text:**Title: Calculating the Degree of Unsaturation for a Complex Molecule** --- **Objective:** Determine the degree of unsaturation (DU) for the given organic molecule. The degree of unsaturation indicates the total number of π bonds and rings in the structure, helping to identify the molecule's possible structure. **Molecule Analysis:** - **Structure Description:** - The molecule contains four ring structures, including three cyclohexane and one aromatic benzene ring. - The benzene ring contributes significant unsaturation due to its alternating double bonds. - Hydroxyl groups (-OH) are attached at two different positions on the molecule, but these groups do not directly affect the degree of unsaturation calculation. - Various stereochemistry indicators (wedges and dashed lines) indicate the three-dimensional arrangement of certain hydrogen atoms (H). **Calculating the Degree of Unsaturation:** 1. **Identify Rings and Double Bonds:** - The benzene ring alone accounts for 4 degrees of unsaturation (3 for the double bonds and 1 for the ring itself). - The presence of other rings adds an additional 3 degrees of unsaturation (1 for each additional ring). 2. **Formula for Degree of Unsaturation:** - DU = C - H/2 + N/2 + 1, where C is the number of carbons, H is the number of hydrogens, and N is the number of nitrogens (not present in this structure). Alternatively, you can count directly from the structure by identifying rings and double bonds. 3. **Conclusion:** - The total degree of unsaturation for this molecule is 7, considering the benzene ring, the additional three rings, and ignoring any other possible multiple bonds since they are not visibly present outside of the benzene ring. **Visual Aid:** - **Diagram:** - The structural diagram provided shows the complex arrangement of the atoms including cyclic and aromatic features that contribute to the molecule's degree of unsaturation. Understanding the degree of unsaturation is crucial in deducing structural information about complex organic compounds, allowing chemists to infer possible functional groups and connectivity within the molecule based on its formula or visual structure.
Expert Solution
Step 1

Chemistry homework question answer, step 1, image 1

trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 2 images

Blurred answer
Knowledge Booster
Nomenclature of Organic Compounds
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY