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普通FTIR搜索不支持明确的化合物级鉴定,但化学上最一致的方向是硅氧烷或聚硅氧烷类材料。该方向主要基于前15谱库模式,其中包含多个硅氧烷和硅酮条目,以及样品在约1014和1259 cm⁻¹处的波段,与Si–O–Si / Si–O–C区域和Si–CH3相关吸收一致。然而,谱库匹配质量实际上缺失,没有直接的参考确认,而接近3359–3372 cm⁻¹的较高波数引入了不确定性,简单的硅氧烷流体无法很好地解释这一点。
推荐的后续步骤: Recollect the FTIR spectrum on a clean, dry sample and verify whether the 3359–3372 cm⁻¹ bands persist; disappearance would support moisture or surface contamination rather than a true sample functional group. Inspect the fingerprint region for stronger confirmation of silicone features, especially the full Si–O–Si envelope and characteristic methyl-on-silicon bands, using a higher-quality spectrum if possible. If available, compare against authenticated PDMS/silicone oil or silicone rubber reference spectra measured under the same conditions. Use complementary analysis such as GC-MS for volatile siloxanes or Raman/elemental screening for silicon to distinguish between a small siloxane molecule and a polymeric silicone material.
| 排名 | 匹配% | 化合物 | SMILES | 光谱编号 | 操作 |
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