• Meilleure correspondance de bibliothèque: 2-Bromo-1,1-diethoxyethane #382

• The assigned library hit, 2-Bromo-1,1-diethoxyethane, is a non-aromatic acetal-type molecule, but the sample shows aromatic-ring bands at 1607 and 1518 cm-1.
• No clear evidence specifically supports a brominated compound; the spectrum does not provide characteristic identifying support for C-Br assignment here.
• Library matching is not reliable in this case because the top candidate and all listed alternatives have reported similarity values of 0.000.
• The broad 3292 cm-1 band could reflect an alcohol, phenol, absorbed moisture, or another hydrogen-bonded functionality, S-O the exact oxygenated group cannot be fixed from the current evidence alone.
• The aromatic substitution pattern cannot be assigned confidently from the present peak list alone.
• Because the library pattern is weak and chemically heterogeneous, the spectrum cannot be narrowed honestly to a single compound or specific commercial material.

Prochaines étapes recommandées: Recollect the FTIR spectrum with full band shapes and baseline-corrected data to confirm whether the 3292 cm-1 feature is a true sample O-H band or environmental moisture. Check for repeatability of the aromatic bands at 1607, 1518, and 762 cm-1 to verify that the aromatic component is intrinsic to the sample. Acquire complementary Raman, GC-MS, or LC-MS data if the sample is a small molecule or mixture, since FTIR alone does not support the current top library identity. If this is a solid or formulated material, compare against reference spectra of oxygenated aromatic materials such as phenoxy-, aryl-ether-, or phenolic-containing compounds rather than relying on the present low-confidence library hit.