Draw the line diagram structures of 5 compounds, each containing a different degree of unsaturation and a different functional group. Write the characteristic IR feature of each.

Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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**Title: Exploring Degrees of Unsaturation and Functional Groups through Line Diagrams**

**Instruction:**

*Draw the line diagram structures of 5 compounds, each containing a different degree of unsaturation and a different functional group. Write the characteristic IR feature of each.*

**Objective:**
The aim is to visualize different chemical structures and understand the impact of unsaturation levels and functional group variations on Infrared (IR) spectroscopy readings.

**Activity:**

- **Compound 1: Saturated Compound**
  - **Structure:** Line diagram with only single bonds.
  - **Functional Group:** Alkane.
  - **Characteristic IR Feature:** Absence of significant absorption > 3000 cm⁻¹.

- **Compound 2: Compound with 1 Degree of Unsaturation**
  - **Structure:** Line diagram including one double bond.
  - **Functional Group:** Alkene.
  - **Characteristic IR Feature:** C=C stretch around 1620-1680 cm⁻¹.

- **Compound 3: Compound with 2 Degrees of Unsaturation**
  - **Structure:** Line diagram with one triple bond.
  - **Functional Group:** Alkyne.
  - **Characteristic IR Feature:** C≡C stretch approximately 2100-2260 cm⁻¹.

- **Compound 4: Compound with 1 Degree of Unsaturation and an Oxygen-containing Functional Group**
  - **Structure:** Line diagram with one double bond.
  - **Functional Group:** Carbonyl (C=O).
  - **Characteristic IR Feature:** C=O stretch near 1700-1750 cm⁻¹.

- **Compound 5: Aromatic Compound**
  - **Structure:** Line diagram representing a benzene ring.
  - **Functional Group:** Aromatic ring.
  - **Characteristic IR Feature:** C=C stretch of aromatic ring around 1450-1600 cm⁻¹.

**Conclusion:**
This exercise enhances understanding of how structural variations impact chemical properties and their IR spectral features, crucial for compound identification and analysis in chemistry.
Transcribed Image Text:**Title: Exploring Degrees of Unsaturation and Functional Groups through Line Diagrams** **Instruction:** *Draw the line diagram structures of 5 compounds, each containing a different degree of unsaturation and a different functional group. Write the characteristic IR feature of each.* **Objective:** The aim is to visualize different chemical structures and understand the impact of unsaturation levels and functional group variations on Infrared (IR) spectroscopy readings. **Activity:** - **Compound 1: Saturated Compound** - **Structure:** Line diagram with only single bonds. - **Functional Group:** Alkane. - **Characteristic IR Feature:** Absence of significant absorption > 3000 cm⁻¹. - **Compound 2: Compound with 1 Degree of Unsaturation** - **Structure:** Line diagram including one double bond. - **Functional Group:** Alkene. - **Characteristic IR Feature:** C=C stretch around 1620-1680 cm⁻¹. - **Compound 3: Compound with 2 Degrees of Unsaturation** - **Structure:** Line diagram with one triple bond. - **Functional Group:** Alkyne. - **Characteristic IR Feature:** C≡C stretch approximately 2100-2260 cm⁻¹. - **Compound 4: Compound with 1 Degree of Unsaturation and an Oxygen-containing Functional Group** - **Structure:** Line diagram with one double bond. - **Functional Group:** Carbonyl (C=O). - **Characteristic IR Feature:** C=O stretch near 1700-1750 cm⁻¹. - **Compound 5: Aromatic Compound** - **Structure:** Line diagram representing a benzene ring. - **Functional Group:** Aromatic ring. - **Characteristic IR Feature:** C=C stretch of aromatic ring around 1450-1600 cm⁻¹. **Conclusion:** This exercise enhances understanding of how structural variations impact chemical properties and their IR spectral features, crucial for compound identification and analysis in chemistry.
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