Results20260223080627394265715 PDF Nigeria

**Data → Analysis → Conclusion/Inference**

**Data:**
* **770 cm⁻¹ (weak, sharp):** Out-of-plane C-H bending (aromatic, monosubstituted or 1,2,4-trisubstituted typical range: 770-730 cm⁻¹ & 710-690 cm⁻¹). Only one peak in this region is observed.
* **826 cm⁻¹ (medium, broad):** C-O-C stretching (possibly from epoxide or cyclic ether, typical range: ~1250-800 cm⁻¹, often broad). Could also be C-Cl stretching.
* **924, 936, 944 cm⁻¹ (weak/medium, sharp):** =C-H out-of-plane bending (terminal alkene, ~990 & 910 cm⁻¹) or C-O stretching (various).
* **1029 cm⁻¹ (medium, broad):** C-O stretching (primary alcohol, ether, or epoxy group, typical range: ~1100-1000 cm⁻¹).
* **1178, 1194 cm⁻¹ (medium, sharp):** C-O stretching (ester, ether, or phenolic C-O, typical range: ~1300-1000 cm⁻¹) or C-C skeletal vibrations.
* **1246 cm⁻¹ (medium, broad):** C-O-C asymmetric stretching (aryl alkyl ether, typical ~1250 cm⁻¹) or C-O stretching (phenolic compound).
* **1293 cm⁻¹ (weak, sharp):** C-O stretching or C-H bending.
* **1366 cm⁻¹ (weak, sharp):** Symmetric CH₃ bending (gem-dimethyl, typical ~1370 cm⁻¹) or O-H bending (phenolic).
* **1503, 1511, 1519 cm⁻¹ (strong, sharp):** Aromatic C=C ring stretching (typical range: ~1600-1450 cm⁻¹). The triplet suggests a substituted benzene ring, possibly with electron-withdrawing groups.
* **1621 cm⁻¹ (weak, broad):** Conjugated C=C stretching (alkene or aromatic overtone/combination band, typical ~1600-1580 cm⁻¹) or adsorbed water.
* **2933, 2945, 2973, 2981 cm⁻¹ (weak, broad):** Aliphatic C-H asymmetric stretching (CH₃, CH₂, typical range: ~2975-2850 cm⁻¹). The weak intensity suggests low aliphatic content.

**Analysis:**
1. The strong, sharp triplet between 1503-1519 cm⁻¹ is definitive evidence for an **aromatic ring**.
2. The single weak peak at 770 cm⁻¹ suggests a specific, likely polysubstituted, aromatic substitution pattern (not monosubstituted, which typically shows two strong bands).
3. The cluster of medium-intensity, sharp/broad bands between 1246-826 cm⁻¹ is dominated by **C-O stretching vibrations**, indicating the presence of **ether (C-O-C), epoxy, or phenolic (Ar-O) groups**. The broadness of some peaks (826, 1029, 1246 cm⁻¹) is characteristic of C-O-C stretching.
4. The weak peaks between 924-944 cm⁻¹ could indicate trace alkene or further C-O vibrations.
5. The weak, broad C-H stretches above 2900 cm⁻¹ indicate minor aliphatic (CH₃/CH₂) content.
6. The weak, broad peak at 1621 cm⁻¹ may be a conjugated system component or an artifact (e.g., water).

**Conclusion/Inference:**
* **Primary Component:** The spectrum is dominated by an **aromatic compound containing significant C-O functionality**.
* **Probable Functional Groups Present:**
* **Aromatic ring** (confirmed, likely polysubstituted).
* **Ether (C-O-C) and/or phenolic (Ar-OH) groups** (strongly indicated by the C-O stretching region profile).
* Minor **aliphatic (CH₃/CH₂) groups**.
* **Inference on Compound Class:** Based on the pattern (strong aromatic bands, prominent C-O-C/C-O stretches, weak aliphatic stretches), the sample is most likely a **polysubstituted aromatic ether, a phenolic resin derivative, or an epoxy-aromatic compound**. The absence of a strong, broad O-H stretch (~3400-3200 cm⁻¹) suggests the phenolic O-H may be substituted (e.g., in an ether or epoxy) or the phenol concentration is low. The specific substitution pattern cannot be determined from the provided data.
* **Note:** The weak peaks in the 900-950 cm⁻¹ region remain ambiguous without further data; they could be part of the epoxy/ether system or indicate a trace component.