What absorbs at 1479 cm⁻¹ in an FTIR spectrum?
A band near 1479 cm⁻¹ can point to several functional groups. Below are the most likely assignments, ranked by how much published evidence supports each — every one traceable to literature (DOI) and cross-validated against our 130,000+ reference spectra and knowledge graph.
Backed by 8 cited sources
Quick answer
A band near 1479 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.
Possibili assegnazioni di gruppi funzionali
| Gruppo funzionale | Fatti di supporto | Fonti citate | Affidabilità massima |
|---|---|---|---|
| C-O single bond | 5 | 5 | 1,0 |
| Methoxy (OCH3) | 4 | 4 | 1,0 |
| Methacrylate | 4 | 4 | 1,0 |
| Acetate | 4 | 4 | 1,0 |
| Aromatic ring | 4 | 4 | 1,0 |
| Alkyl C-H | 4 | 4 | 1,0 |
| C=n | 1 | 1 | 1,0 |
| Amide | 1 | 1 | 1,0 |
| Ring structure | 1 | 1 | 1,0 |
| Hydrogen bond | 1 | 1 | 1,0 |
| N-O bond | 1 | 1 | 1,0 |
| Amino acid | 1 | 1 | 1,0 |
La classifica riflette le prove bibliografiche accumulate, non una singola regola autorevole. Conferma sempre nel contesto del tuo campione.
Possible materials
| Materiale | Picchi di supporto | Overlapping groups | Fonti citate |
|---|---|---|---|
| silver nanoparticles | 1479, 1636, 1631 | Methacrylate, Acetate, C-O single bond | 1 |
Materials are shown only when the same literature pool supports this band and at least one additional characteristic peak.
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 1479 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.
Letteratura dietro queste assegnazioni
-
Acetate affidabilità 1,0
“The results obtained reveal that (i) the A-¥ C-O cm-1 reflecting the stretching mode of Q in the semiquinone most pronounced band at 1479 cm-1 anion radical remains invariant to "iron depletion" while it shifts by 4 and 2 to lower frequenci”
Noguchi 等 - 1999 - Comparative FTIR analysis of the microenvironment DOI: 10.1021/bi981759e -
N-O bond affidabilità 1,0
“no band shifts of the band at 1479 cm -~ are seen in the spectra 8 Breton, J., Boullais, C., Burie, J.-R., Nabedryk, E.”
FTIR spectroscopy shows weak symmetric hydrogen bonding of the QB carbonyl groups in Rhodobacter sphaeroides R26 reaction centres DOI: 10.1016/0014-5793(95)00805-J -
Aromatic ring affidabilità 1,0
“indicate silica and The peaks at 1479.2 and 1600 Pb×exp{ exp[ t)+1]} C-- exhibit C bending, consistent with various aromatic ring modes and Rm×e”
Enhancement of biogas production from individually or co-digested green algae Cheatomorpha linum using ultrasound and ozonation treated biochar DOI: 10.1016/j.ultsonch.2022.106197 -
Alkyl C-H affidabilità 1,0
“The C-H bending Raman peaks of Type 1 SSA tion of 0.2M alanine and 0.1M MgCl standard chemicals 2 1433/1457/1479cm-1, are split into which correspond to and collected on Al foil.”
Eom 等 - 2016 - Single-particle investigation of summertime and wi DOI: 10.5194/acp-16-13823-2016 -
Amide affidabilità 1,0
“cm(cid:5)1 cm(cid:5)1 and 607.7 stretching, and absorption bands between 1479.1 TheFTIRspectrumwasusedtoidentifythefunctionalgroupofactive cm(cid:5)1 are characteristic of the amide II region and bands from 536.9 to componentsbasedonthepeak”
Phytochemical screening, polyphenols, flavonoids and tannin content, antioxidant activities and FTIR characterization of Marrubium vulgare L. from 2 different localities of Northeast of Morocco DOI: 10.1016/j.heliyon.2020.e05609 -
Acetate affidabilità 1,0
“Bcm-1 A strong positive peak at 1479 (due to a C-O stretching of Q [8]) is observed in the spectrum recorded after the 1st flash.”
Mezzetti - 2010 - Rapid-scan FTIR difference spectroscopy applied to DOI: 10.3233/SPE-2010-0435 -
Alkyl C-H affidabilità 1,0
“14 3015 285013 ) ) cm-1 12 Meanwhile, bands at 1479 and 1370 related to the C-H .”
Moussa 等 - 2018 - Nature of Active Nickel Sites and Initiation Mecha DOI: 10.1021/acscatal.7b03970 -
C=n affidabilità 1,0
“The appearance of the instinct band at 2865.16 cm-1 (C-H) showed alkanes present, the band at 2031.92 cm-1 confirmed the presence of alkynes, and the band at 1478.96 cm-1 revealed the N-C and N=C groups.”
Naveed 等 - 2022 - Green Synthesis of Silver Nanoparticles Using the DOI: 10.3390/molecules27134226
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