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光谱与含脂肪族酯的材料最为一致,而非明确归属于谱库最佳匹配。最强的样品证据是1742 cm⁻¹处强烈的酯羰基带,伴随1235和1159 cm⁻¹的C–O伸缩带,以及2922、2852、1461、1374和721 cm⁻¹的长烷基链模式。在领先的谱库候选物中,化学一致的模式主要由长链酯化合物主导,如脂肪酸酯、二元酸酯和相关的含氧脂类物质。然而,谱库匹配质量实际上为零,并且没有直接或相关的文献证据专门支持十四烷二酸二乙酯作为当前样品。因此,更广泛的酯方向是最化学上可支持的结论。
推荐的后续步骤: Re-run the FTIR with full-spectrum review and band intensities to confirm the ester C–O region and check for any overlooked bands that would distinguish monoester, diester, or hydroxyl-containing ester materials. Compare the sample against authenticated spectra of long-chain fatty esters and aliphatic diesters, including Diethyl tetradecanedioate, under the same measurement conditions. Use GC-MS or LC-MS, if the sample is extractable, to determine chain length distribution and whether the material is a single ester, a diester, or a mixture of fatty esters. If unsaturation is important to the application, verify the weak 3006 cm⁻1 feature with repeat FTIR or complementary NMR analysis.
| 排名 | 匹配% | 化合物 | SMILES | 光谱编号 | 操作 |
|---|---|---|---|---|---|
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