- 660 cm⁻¹: **C–Cl stretch (alkyl chloride)** – Strong sharp peak; typical for vicinal or geminal chlorides. - 696 cm⁻¹: **C–Cl stretch (alkyl chloride)** – Medium sharp; consistent with chlorinated aliphatic compounds. - 820 cm⁻¹: **C–Cl bend (in-plane)** – Medium sharp; supports presence of chlorinated alkyl group. - 896 cm⁻¹: **C–Cl bend (in-plane)** – Medium sharp; further confirms alkyl chloride. - 993 cm⁻¹: **C–Cl stretch (alkyl chloride)** – Strong sharp; characteristic of chlorinated alkanes. - 1033 cm⁻¹: **C–O stretch (alcohol or ether)** – Strong sharp; likely an ether or alcohol. - 1100 cm⁻¹: **C–O stretch (ether or alcohol)** – Medium sharp; supports aliphatic ether or alcohol. - 1166 cm⁻¹: **C–O stretch (ether)** – Strong broad; typical for asymmetric C–O stretch in ethers. - 1393 cm⁻¹: **CH₃ bend (symmetric)** – Weak sharp; suggests methyl groups. - 1505 cm⁻¹: **C=C stretch (aromatic)** – Medium sharp; indicates aromatic ring. - 1625 cm⁻¹: **C=C stretch (aromatic)** – Weak broad; supports aromatic system. - 3420 cm⁻¹: **O–H stretch (hydrogen-bonded alcohol)** – Weak broad; suggests alcohol or phenol.
**Conclusion:** The spectrum indicates a chlorinated aromatic compound with an alcohol or phenol group. Strong peaks at 1033–1166 cm⁻¹ (C–O stretches) and 3420 cm⁻¹ (O–H) suggest an alcohol or phenol. Aromatic C=C stretches at 1505–1625 cm⁻¹ and chlorinated alkyl group peaks (660–993 cm⁻¹) point to a chlorinated phenol or aryl alcohol (e.g., chlorophenol). The presence of methyl groups (1393 cm⁻¹) and broad O–H stretch further supports a substituted phenol. Likely compound class: **chlorinated phenol** (e.g., 4-chlorophenol).
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
- 660 cm⁻¹: **C–Cl stretch (alkyl chloride)** – Strong sharp peak; typical for vicinal or geminal chlorides.
- 696 cm⁻¹: **C–Cl stretch (alkyl chloride)** – Medium sharp; consistent with chlorinated aliphatic compounds.
- 820 cm⁻¹: **C–Cl bend (in-plane)** – Medium sharp; supports presence of chlorinated alkyl group.
- 896 cm⁻¹: **C–Cl bend (in-plane)** – Medium sharp; further confirms alkyl chloride.
- 993 cm⁻¹: **C–Cl stretch (alkyl chloride)** – Strong sharp; characteristic of chlorinated alkanes.
- 1033 cm⁻¹: **C–O stretch (alcohol or ether)** – Strong sharp; likely an ether or alcohol.
- 1100 cm⁻¹: **C–O stretch (ether or alcohol)** – Medium sharp; supports aliphatic ether or alcohol.
- 1166 cm⁻¹: **C–O stretch (ether)** – Strong broad; typical for asymmetric C–O stretch in ethers.
- 1393 cm⁻¹: **CH₃ bend (symmetric)** – Weak sharp; suggests methyl groups.
- 1505 cm⁻¹: **C=C stretch (aromatic)** – Medium sharp; indicates aromatic ring.
- 1625 cm⁻¹: **C=C stretch (aromatic)** – Weak broad; supports aromatic system.
- 3420 cm⁻¹: **O–H stretch (hydrogen-bonded alcohol)** – Weak broad; suggests alcohol or phenol.
**Conclusion:**
The spectrum indicates a chlorinated aromatic compound with an alcohol or phenol group. Strong peaks at 1033–1166 cm⁻¹ (C–O stretches) and 3420 cm⁻¹ (O–H) suggest an alcohol or phenol. Aromatic C=C stretches at 1505–1625 cm⁻¹ and chlorinated alkyl group peaks (660–993 cm⁻¹) point to a chlorinated phenol or aryl alcohol (e.g., chlorophenol). The presence of methyl groups (1393 cm⁻¹) and broad O–H stretch further supports a substituted phenol. Likely compound class: **chlorinated phenol** (e.g., 4-chlorophenol).
This discussion presents an infrared spectral analysis combining automated interpretation with reference comparison to support functional group identification and structural assessment.