**Analysis:** * **Peak at 772 cm⁻¹:** This strong, sharp peak is consistent with the C-Cl stretching vibration of chloroform (CHCl₃), which typically appears in the range of 750-800 cm⁻¹. This is a key characteristic band. * **Peak at 670 cm⁻¹:** This weak, sharp peak could correspond to a C-Cl bending or other deformation mode, which is plausible for a polychlorinated compound like chloroform. * **Peak at 1219 cm⁻¹:** This weak, sharp peak does not correspond to a primary characteristic vibration of pure chloroform. Chloroform's C-H stretching appears near 3020 cm⁻¹, and its C-H bending is near 1220 cm⁻¹ but is typically very weak or obscured. Its presence as a distinct, albeit weak, peak is noted. * **Peak at 1604 cm⁻¹:** This weak, broad peak is highly atypical for pure chloroform. Chloroform lacks any bonds that would produce a significant absorption in the 1600 cm⁻¹ region (characteristic of C=C, C=O, or aromatic ring stretches). This indicates the presence of an impurity or a different compound. * **Peak at 2360 cm⁻¹:** This weak, broad peak is characteristic of atmospheric CO₂ (asymmetric stretching), commonly observed as an artifact in FTIR measurements and not related to the sample.
**Conclusion:** The sample is **not Chloroform**. The key evidence is the presence of a weak, broad absorption band at ~1604 cm⁻¹, which is inconsistent with the expected FTIR spectrum of pure chloroform. Chloroform has no functional groups that absorb in this region. The strong C-Cl stretch at 772 cm⁻¹ suggests the sample contains chlorinated organic compounds. The peak at 1219 cm⁻¹ may also indicate additional functional groups. The sample is likely a chlorinated organic compound containing carbonyl (C=O), alkene (C=C), or aromatic moieties, or is a mixture containing chloroform and another organic compound with absorptions in the 1600 cm⁻¹ region.
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
**Data:**
* Peak 670 cm⁻¹: weak, sharp.
* Peak 772 cm⁻¹: strong, sharp.
* Peak 1219 cm⁻¹: weak, sharp.
* Peak 1604 cm⁻¹: weak, broad.
* Peak 2360 cm⁻¹: weak, broad.
**Analysis:**
* **Peak at 772 cm⁻¹:** This strong, sharp peak is consistent with the C-Cl stretching vibration of chloroform (CHCl₃), which typically appears in the range of 750-800 cm⁻¹. This is a key characteristic band.
* **Peak at 670 cm⁻¹:** This weak, sharp peak could correspond to a C-Cl bending or other deformation mode, which is plausible for a polychlorinated compound like chloroform.
* **Peak at 1219 cm⁻¹:** This weak, sharp peak does not correspond to a primary characteristic vibration of pure chloroform. Chloroform's C-H stretching appears near 3020 cm⁻¹, and its C-H bending is near 1220 cm⁻¹ but is typically very weak or obscured. Its presence as a distinct, albeit weak, peak is noted.
* **Peak at 1604 cm⁻¹:** This weak, broad peak is highly atypical for pure chloroform. Chloroform lacks any bonds that would produce a significant absorption in the 1600 cm⁻¹ region (characteristic of C=C, C=O, or aromatic ring stretches). This indicates the presence of an impurity or a different compound.
* **Peak at 2360 cm⁻¹:** This weak, broad peak is characteristic of atmospheric CO₂ (asymmetric stretching), commonly observed as an artifact in FTIR measurements and not related to the sample.
**Conclusion:**
The sample is **not Chloroform**. The key evidence is the presence of a weak, broad absorption band at ~1604 cm⁻¹, which is inconsistent with the expected FTIR spectrum of pure chloroform. Chloroform has no functional groups that absorb in this region. The strong C-Cl stretch at 772 cm⁻¹ suggests the sample contains chlorinated organic compounds. The peak at 1219 cm⁻¹ may also indicate additional functional groups. The sample is likely a chlorinated organic compound containing carbonyl (C=O), alkene (C=C), or aromatic moieties, or is a mixture containing chloroform and another organic compound with absorptions in the 1600 cm⁻¹ region.
This discussion presents an infrared spectral analysis combining automated interpretation with reference comparison to support functional group identification and structural assessment.