What type of oxygen-based functional groups may be present in the molecule, based on the IR? Can the molecule contain a/an:aldehyde? [ Select ] ["Yes", "No"]alcohol? [ Select ] ["Yes", "No"]carboxylic acid? [ Select ] ["Yes", "No"]ester? [ Select ] ["Yes", "No"]ether? [ Select ] ["Yes", "No"]ketone?Molecule: C6H12ODegree of unsaturation=1 ### Characteristic Infrared Absorption Frequencies**Bonding and Frequencies:**| Bonding | Frequency (cm⁻¹) | Intensity* | Type of Vibration (Stretching unless noted) ||--------------------|----------------------|------------|-------------------------------------------------------|| C—H | | | || —CH₃ | 2850–3000 | m | bending || —CH₂— | 1375 and 1450 | w–m | bending || | 1450–1475 | m | || alkene | 3000–3100 | m | || | 650–1000 | s | out-of-plane bending || alkyne | 3300 | w–m | || | 3030 | s | || arene | 690–900 | s | out-of-plane bending || aldehyde | 2720 | m | || C=C | 1600–1680 | w–m | || alkene | 1450 and 1600 | w–m | || arene | 2100–2250 | m | || alcohol, ether, | 1000–1100 | s | || ester, carboxylic | 1200–1250 (sp₂ C—O) | s | || acid | 900–1300 | s | || anhydride | 1680–1800 | s | || | 1700–1725 | s | || amide | 1630–1820 | s | || | 1630–1820 | s | || ketone | 1735–1800 | s | || aldehyde | 1740–1760 and | s | || ester | 1800–1850 | s | || anhydride | 1800 | | || ### Infrared Spectrum Analysis of Unknown Compound CThis infrared (IR) spectrum is recorded from an unknown compound labeled as "Unknown C NEAT." The x-axis represents the wavenumber in cm⁻¹, ranging from 4000 to 450 cm⁻¹, while the y-axis shows the percent transmittance (%T), ranging from 40 to 102.#### Key Peaks and Their Wavenumbers:1. **2958.34 cm⁻¹**: Likely indicative of C-H stretching, common in alkane groups.2. **2873.37 cm⁻¹**: Another C-H stretch, possibly from aldehydes or other similar compounds.3. **1737.03 cm⁻¹**: Characteristic of C=O stretching, often found in carbonyl groups.4. **1467.20 cm⁻¹** and **1436.10 cm⁻¹**: Possible C-H bending or deformation.5. **1368.56 cm⁻¹** and **1256.23 cm⁻¹**: Could indicate C-O stretching or C-H bending.6. **1121.14 cm⁻¹**, **1194.38 cm⁻¹**, and **1100.65 cm⁻¹**: Often represent C-O stretches, common in alcohols, ethers, or esters.7. **1011.55 cm⁻¹**, **881.86 cm⁻¹**: Might be C-H out-of-plane bending seen in aromatic compounds.8. **830.91 cm⁻¹**, **711.23 cm⁻¹**, and **592.08 cm⁻¹**: Suggest C-H out-of-plane deformations or other functional group vibrations.9. **953.75 cm⁻¹**: Another peak potentially indicating out-of-plane bending/vibrations.This spectrum reveals various functional groups that make up the unknown compound, suggesting a complex molecular structure with several distinct functional groups, such as aromatics and carbonyls, inferred from the characteristic peak positions.

IR spectroscopy is used to determine the functional groups present in the sample. Different…

Answered: What type of oxygen-based functional…

Chemistry

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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

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What type of oxygen-based functional groups may be present in the molecule, based on the IR? Can the molecule contain a/an:

aldehyde? [ Select ] ["Yes", "No"]

alcohol? [ Select ] ["Yes", "No"]

carboxylic acid? [ Select ] ["Yes", "No"]

ester? [ Select ] ["Yes", "No"]

ether? [ Select ] ["Yes", "No"]

ketone?

Molecule: C₆H₁₂O

_{Degree of unsaturation=1}

### Characteristic Infrared Absorption Frequencies

**Bonding and Frequencies:**

| Bonding | Frequency (cm⁻¹) | Intensity* | Type of Vibration (Stretching unless noted) |
|--------------------|----------------------|------------|-------------------------------------------------------|
| C—H | | | |
| —CH₃ | 2850–3000 | m | bending |
| —CH₂— | 1375 and 1450 | w–m | bending |
| | 1450–1475 | m | |
| alkene | 3000–3100 | m | |
| | 650–1000 | s | out-of-plane bending |
| alkyne | 3300 | w–m | |
| | 3030 | s | |
| arene | 690–900 | s | out-of-plane bending |
| aldehyde | 2720 | m | |
| C=C | 1600–1680 | w–m | |
| alkene | 1450 and 1600 | w–m | |
| arene | 2100–2250 | m | |
| alcohol, ether, | 1000–1100 | s | |
| ester, carboxylic | 1200–1250 (sp₂ C—O) | s | |
| acid | 900–1300 | s | |
| anhydride | 1680–1800 | s | |
| | 1700–1725 | s | |
| amide | 1630–1820 | s | |
| | 1630–1820 | s | |
| ketone | 1735–1800 | s | |
| aldehyde | 1740–1760 and | s | |
| ester | 1800–1850 | s | |
| anhydride | 1800 | | |
|

### Infrared Spectrum Analysis of Unknown Compound C

This infrared (IR) spectrum is recorded from an unknown compound labeled as "Unknown C NEAT." The x-axis represents the wavenumber in cm⁻¹, ranging from 4000 to 450 cm⁻¹, while the y-axis shows the percent transmittance (%T), ranging from 40 to 102.

#### Key Peaks and Their Wavenumbers:

1. **2958.34 cm⁻¹**: Likely indicative of C-H stretching, common in alkane groups.
2. **2873.37 cm⁻¹**: Another C-H stretch, possibly from aldehydes or other similar compounds.
3. **1737.03 cm⁻¹**: Characteristic of C=O stretching, often found in carbonyl groups.
4. **1467.20 cm⁻¹** and **1436.10 cm⁻¹**: Possible C-H bending or deformation.
5. **1368.56 cm⁻¹** and **1256.23 cm⁻¹**: Could indicate C-O stretching or C-H bending.
6. **1121.14 cm⁻¹**, **1194.38 cm⁻¹**, and **1100.65 cm⁻¹**: Often represent C-O stretches, common in alcohols, ethers, or esters.
7. **1011.55 cm⁻¹**, **881.86 cm⁻¹**: Might be C-H out-of-plane bending seen in aromatic compounds.
8. **830.91 cm⁻¹**, **711.23 cm⁻¹**, and **592.08 cm⁻¹**: Suggest C-H out-of-plane deformations or other functional group vibrations.
9. **953.75 cm⁻¹**: Another peak potentially indicating out-of-plane bending/vibrations.

This spectrum reveals various functional groups that make up the unknown compound, suggesting a complex molecular structure with several distinct functional groups, such as aromatics and carbonyls, inferred from the characteristic peak positions.

Definition Definition Organic compounds that have a carbonyl group, C = O, as their functional group. The carbonyl group in ketones is placed somewhere in the middle of the molecular structure, which means, the C=O is attached to two alkyl groups or benzene rings. Just like all other homologous series, the naming of ketones is done using a common suffix “-one”. The general molecular formula is C n H 2n O. Functional group of a ketone

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