- **872 cm⁻¹**: C-H rocking (aromatic or substituted benzene) Justification: Weak sharp peak consistent with aromatic C-H rocking vibrations.
- **1013 cm⁻¹**: C-O stretching (alcohols, ethers, or esters) Justification: Strong broad peak typical of C-O stretching in ethers or esters.
- **1102 cm⁻¹ & 1117 cm⁻¹**: C-O stretching (secondary alcohol or ether) Justification: Medium sharp peaks in the region associated with C-O stretching vibrations.
- **1163 cm⁻¹**: C-O stretching (alcohols or ethers) Justification: Medium broad peak indicative of C-O stretching in alcohols or ethers.
- **1266 cm⁻¹**: C-O stretching (esters or ethers) Justification: Strong broad peak characteristic of C-O stretching in esters or ethers.
- **1388 cm⁻¹ & 1407 cm⁻¹**: C-H bending (alkanes or alkenes) Justification: Weak sharp peaks typical of C-H bending vibrations in alkanes or alkenes.
- **1455 cm⁻¹**: C-H bending (methyl or methylene groups) Justification: Weak broad peak consistent with C-H bending in methyl or methylene groups.
- **1708 cm⁻¹**: C=O stretching (ketones, aldehydes, or esters) Justification: Strong broad peak characteristic of carbonyl (C=O) stretching vibrations.
- **2952 cm⁻¹**: C-H stretching (alkanes) Justification: Weak broad peak in the range typical for C-H stretching in alkanes.
---
**Conclusion:** The FTIR spectrum indicates the presence of an **ester functional group** (strong C=O stretch at 1708 cm⁻¹ and multiple C-O stretches between 1013–1266 cm⁻¹). Aromatic C-H vibrations (668 cm⁻¹, 872 cm⁻¹) suggest the compound may contain an aromatic ring. The C-Cl stretch at 725 cm⁻¹ indicates the presence of a chlorinated substituent. The compound likely belongs to the class of **aromatic esters with a chlorinated substituent**.
This discussion presents an infrared spectral analysis combining
automated interpretation with reference comparison to support
functional group identification and structural assessment.
FTIR Spectrum Interpretation Summary
Comparative Analysis Conclusion
AI-assisted Interpretation Conclusion
**Peak Analysis:**
- **668 cm⁻¹**: Out-of-plane C-H bending (aromatic)
Justification: Medium sharp peak in the range typical for aromatic C-H out-of-plane deformation.
- **725 cm⁻¹**: C-Cl stretching (alkyl halide)
Justification: Strong sharp peak characteristic of C-Cl stretching vibrations.
- **872 cm⁻¹**: C-H rocking (aromatic or substituted benzene)
Justification: Weak sharp peak consistent with aromatic C-H rocking vibrations.
- **1013 cm⁻¹**: C-O stretching (alcohols, ethers, or esters)
Justification: Strong broad peak typical of C-O stretching in ethers or esters.
- **1102 cm⁻¹ & 1117 cm⁻¹**: C-O stretching (secondary alcohol or ether)
Justification: Medium sharp peaks in the region associated with C-O stretching vibrations.
- **1163 cm⁻¹**: C-O stretching (alcohols or ethers)
Justification: Medium broad peak indicative of C-O stretching in alcohols or ethers.
- **1266 cm⁻¹**: C-O stretching (esters or ethers)
Justification: Strong broad peak characteristic of C-O stretching in esters or ethers.
- **1388 cm⁻¹ & 1407 cm⁻¹**: C-H bending (alkanes or alkenes)
Justification: Weak sharp peaks typical of C-H bending vibrations in alkanes or alkenes.
- **1455 cm⁻¹**: C-H bending (methyl or methylene groups)
Justification: Weak broad peak consistent with C-H bending in methyl or methylene groups.
- **1708 cm⁻¹**: C=O stretching (ketones, aldehydes, or esters)
Justification: Strong broad peak characteristic of carbonyl (C=O) stretching vibrations.
- **2952 cm⁻¹**: C-H stretching (alkanes)
Justification: Weak broad peak in the range typical for C-H stretching in alkanes.
---
**Conclusion:**
The FTIR spectrum indicates the presence of an **ester functional group** (strong C=O stretch at 1708 cm⁻¹ and multiple C-O stretches between 1013–1266 cm⁻¹). Aromatic C-H vibrations (668 cm⁻¹, 872 cm⁻¹) suggest the compound may contain an aromatic ring. The C-Cl stretch at 725 cm⁻¹ indicates the presence of a chlorinated substituent. The compound likely belongs to the class of **aromatic esters with a chlorinated substituent**.
This discussion presents an infrared spectral analysis combining automated interpretation with reference comparison to support functional group identification and structural assessment.