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光譜庫最佳匹配為 1-溴二十二烷,但匹配品質實際為缺失,且樣品光譜包含與單純溴代烷烴不一致的譜帶。觀察到的強脂肪族 C-H 伸展區(2913, 2851 cm-1)及亞甲基相關譜帶(包括 1464 和 720 cm-1)支持長鏈烴組分。然而,在 1748 cm-1 的清晰譜帶指示羰基,且在 3272-3321 cm-1 附近的寬/成對吸收指示羥基和/或胺型功能團,這大大擴展了化學上可支持的結論,超出了光譜庫命名的最佳匹配。根據現有證據,樣品最好描述為含有額外羰基和氫鍵功能團的長鏈脂肪族有機材料,而不是具體指定為 1-溴二十二烷。
建議的下一步: Verify the carbonyl assignment by inspecting the full fingerprint region for ester C-O stretching bands, especially in the approximate 1300-1000 cm-1 range. Check for N-H versus O-H character by examining the shape and breadth of the 3272-3321 cm-1 region and by looking for accompanying amide bands near 1650-1550 cm-1 if available. If brominated identity is important, confirm with an orthogonal method such as GC-MS, LC-MS, or XRF/elemental halogen analysis rather than FTIR alone. If the sample may be a polymer or formulated material, compare against reference spectra for long-chain esters, fatty amides, fatty alcohols, oxidized polyethylene, and wax-like hydrocarbon mixtures.
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FTIR.fun
This is the FTIR analysis result of a PDF file uploaded by a user with IP 217.xxx.xxx.79 . The original image is shown below. Due to the peak height threshold setting, some weak peaks were not included in the analysis and will be supplemented later.
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