What absorbs at 1713 cm⁻¹ in an FTIR spectrum?
A band near 1713 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 1713 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 |
|---|---|---|---|
| Carbonyl (C=O) | 22 | 20 | 1,0 |
| Carboxyl (COOH) | 12 | 12 | 1,0 |
| Methacrylate | 11 | 11 | 1,0 |
| Acetate | 11 | 11 | 1,0 |
| Ketone | 9 | 9 | 1,0 |
| Ester | 9 | 9 | 1,0 |
| Amide | 9 | 9 | 1,0 |
| Methoxy (OCH3) | 3 | 3 | 1,0 |
| C-O single bond | 3 | 3 | 1,0 |
| N h | 2 | 2 | 1,0 |
| Hydroxyl (O-H) | 2 | 2 | 1,0 |
| S s | 1 | 1 | 1,0 |
| Alkyl C-H | 1 | 1 | 1,0 |
| Alkene (C=C) | 1 | 1 | 1,0 |
| Nucleic acid | 1 | 1 | 1,0 |
| C c single bond | 1 | 1 | 1,0 |
| Hydrogen bond | 1 | 1 | 1,0 |
| Carbohydrate | 1 | 1 | 1,0 |
| Aldehyde (CHO) | 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 |
|---|---|---|---|
| PVA | 1713, 1660, 2930 | Acetate, Methacrylate, Carbonyl (C=O) | 1 |
| polyester | 1713, 1700, 1250 | Carbonyl (C=O), Methacrylate, Acetate | 1 |
| Polyamide | 1713, 1663, 1541 | Carbonyl (C=O), Methacrylate, Acetate | 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 1713 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
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Acetate affidabilità 1,0
“This means that the addition shows sharp absorption and low intensity at 1712.8 cm-1 of DVB is able to shift the hydroxyl bonds in blends, which indicates the presence of C=O carbonyl so that DVB makes the blends more compatible.”
Aritonang 等 - 2019 - Grafting of Oleic Acid On Cyclic Natural Rubber Re DOI: 10.13005/ojc/350119 -
Carboxyl (COOH) affidabilità 1,0
“The carboxyl group peaks at 1713 and 1718 appeared to be larger for polymers synthesized for 6 and 12 hr than those synthesized for 18 and 24 hr, indicating higher conversion yields at longer synthesis duration, given the constant polymeriz”
Bahadi 等 - 2021 - Synthesis and Characterization of Green Biodegrada DOI: 10.33263/BRIAC116.1435914371 -
Acetate affidabilità 1,0
“A strong absorption peak at 1713 is assigned to the C=O stretching and it is a typical infrared absorption peak of petrochemical resin.”
Chen 等 - 2019 - Baltic amber or Burmese amber FTIR studies on amb DOI: 10.1016/j.saa.2019.117270 -
Hydroxyl (O-H) affidabilità 1,0
“1713 CdO O-H of the stretching vibration and the bending of hydrogen-bonded and non-hydrogen-bonded carboxyl vibration in the hydrogen bonding between two carboxyl groups.”
Hirashima 等 - 2005 - ATR-FTIR spectroscopic study on hydrogen bonding o DOI: 10.1021/ma051081s -
Aldehyde (CHO) affidabilità 1,0
“In D-glucose, synthesized CdS NPs consecutive peaks at 1712.98 and 1680.35 cm-1 correspond to aldehyde group present in D-glucose γC=O.”
Extracellular polymeric substances of a marine bacterium mediated synthesis of CdS nanoparticles for removal of cadmium from aqueous solution DOI: 10.1016/j.jcis.2015.10.004 -
Acetate affidabilità 1,0
“The presence of cyclic succinimide ring (-N- (CO-) 2) thermally cured BMIX shows bands at 1157, 1396 and cm-1 corresponds to the stretching of -C-O-C1713 structure in polyBMII.”
Surender 等 - 2014 - Bismaleimide and Bispropargyl Ether Blends Curing DOI: 10.1134/S1560090414050157 -
Acetate affidabilità 1,0
“2933 CH2 asymmetric stretching [13,17] diffraction pattern of unfilled PVA shows a diffraction peak 1713 C O stretching [13,14] 19.4◦.”
Characterization and some physical studies of PVA/PVP filled with MWCNTs DOI: 10.1016/j.jmrt.2018.04.023 -
Carbonyl (C=O) affidabilità 1,0
“LLM confirmed rule peak-group candidate”
Aguilar-Bolados 等 - 2020 - SEBS-Grafted Itaconic Acid as Compatibilizer for E DOI: 10.3390/polym12030643
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