What absorbs at 2063 cm⁻¹ in an FTIR spectrum?
Una banda cerca de 2063 cm⁻¹ puede apuntar a varios grupos funcionales. A continuación se muestran las asignaciones más probables, clasificadas por cuánta evidencia publicada respalda cada una — cada una trazable a literatura (DOI) y validada de forma cruzada con nuestros más de 130,000 espectros de referencia y grafo de conocimiento.
Backed by 4 cited sources
Quick answer
A band near 2063 cm⁻¹ is usually interpreted by checking which functional groups repeatedly co-occur there in the literature, then confirming at least one or two additional peaks in the same sample. This page ranks those assignments by accumulated evidence rather than by a single fixed textbook rule.
Posibles asignaciones de grupos funcionales
| Grupo funcional | Hechos de respaldo | Fuentes citadas | Confianza máxima |
|---|---|---|---|
| Urea | 1 | 1 | 1,0 |
| Thiocyanate | 1 | 1 | 1,0 |
| Bromine | 1 | 1 | 1,0 |
| Methoxy (OCH3) | 1 | 1 | 1,0 |
| Methacrylate | 1 | 1 | 1,0 |
| C-O single bond | 1 | 1 | 1,0 |
| Acetate | 1 | 1 | 1,0 |
La clasificación refleja la evidencia acumulada de la literatura, no una única regla autorizada. Siempre confirme según el contexto de su muestra.
Spectrum logic
This band becomes meaningful only when read with its neighboring peaks. In practice, analysts first look at the assignments above, then check whether the same sample also shows other peaks expected for the same structural motif. A lone band near 2063 cm⁻¹ is usually not enough for material identification by itself.
Real-world usage
This type of query is common in polymer identification, unknown plastic screening, QC troubleshooting, recycled-material verification, and literature-backed peak assignment review.
Common mistakes
- Treating one isolated band as proof of a material without checking at least one or two supporting peaks.
- Ignoring overlap: multiple functional groups can contribute near the same wavenumber.
- Skipping validation when additives, blends, oxidation, or contamination may distort the spectrum.
Verification advice
When ambiguity remains, validate the hypothesis with DSC, GC-MS, or TGA, especially for blends, degraded samples, and filled polymers.
Literatura detrás de estas asignaciones
-
Acetate confianza 1,0
“cm-1 cm-1 at 1963 and a positive peak at 2063 are due to the was shifted to a lower frequency with significantly reduced a32+CO B1+CO, C-O respectively.40 and Cu In stretching of Fe intensity, while the negative peak appeared clearly.”
Okuno 等 - 2003 - FTIR detection of protonationdeprotonation of key DOI: 10.1021/ja021302z -
Bromine confianza 1,0
“(+) cm-1 cm-1 2466 of BR (c) were previously assigned as the SrSRI The peaks at 2063 and 2037 in (Figure 5a) O-D”
Suzuki 等 - 2008 - Structural Changes of Salinibacter Sensory Rhodops DOI: 10.1021/bi801358b -
Thiocyanate confianza 1,0
“The band area at 2063 cm-1) indicates SCN- (SCN-, C-N stretching).”
Rodrigues 等 - 2019 - Differential Molecular Signature of Human Saliva U DOI: 10.1590/0103-6440201902228 -
confianza 1,0
“ded to two surface Pt atoms (bridged On monometallic Pt catalyst, the spectrum showed a main cm-1 cm-1, peak at 2063 along with a shoulder at 2080 cm-1.”
Zhang 等 - 2015 - The effect of preparation method on the performanc DOI: 10.1515/pjct-2015-0003
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