What absorbs at 2014 cm⁻¹ in an FTIR spectrum?
A band near 2014 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 2014 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.
Possible functional-group assignments
| Functional group | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| Hydroxyl (O-H) | 2 | 2 | 1.0 |
| N h | 2 | 2 | 1.0 |
| Alkyl C-H | 2 | 2 | 1.0 |
| Ring structure | 1 | 1 | 1.0 |
| Thiocarbonyl | 1 | 1 | 1.0 |
| Amine primary | 1 | 1 | 1.0 |
| Aromatic ring | 1 | 1 | 1.0 |
| Secondary amine | 1 | 1 | 1.0 |
| Carboxyl (COOH) | 1 | 1 | 1.0 |
| Metal oxygen | 1 | 1 | 1.0 |
| Alkene (C=C) | 1 | 1 | 1.0 |
| S s | 1 | 1 | 1.0 |
| C-S single bond | 1 | 1 | 1.0 |
Ranking reflects accumulated literature evidence, not a single fixed rule. Always confirm against your sample context.
Possible materials
| Material | Supporting peaks | Overlapping groups | Cited sources |
|---|---|---|---|
| TiO2 | 2014, 1700, 1093 | Hydroxyl (O-H), Alkyl C-H | 2 |
| Kaolinite | 2014, 3696, 693 | Hydroxyl (O-H) | 1 |
| hydrogels | 2014, 3281, 1700 | Alkyl C-H, N h | 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 2014 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.
Literature behind these assignments
-
C-S single bond confidence 1.0
“22.88(cid:1)0.23 16.58(cid:1)0.33 29.09(cid:1)0.23 C S-S vibration(disulfides) 2014).”
El-Sayed 和 Ismail - 2022 - Physico-chemodiversity variation between the most DOI: 10.1016/j.heliyon.2022.e12457 -
Alkyl C-H confidence 1.0
“Peng et al., 2014b, C‚O C‚C CAO stretch or stretch, CH bend, stretch and 2015;”
Ge 等 - 2017 - Characteristics of activated carbon remove sulfur DOI: 10.1016/j.sjbs.2016.12.016 -
Alkyl C-H confidence 1.0
“cm-1 cm-1 C-H and 3440.89 attributed to bonding, C=C stretching, 2014, Bryce, Chem.Commun.”
Synthesis and characterization of a green‐light‐emitting (pbi‐Br)2Ir (acac) metal complex for OLEDs DOI: 10.1002/bio.3565 -
Metal oxygen confidence 1.0
“cm-1) 4000-500 cm-1 bands of quartz (790 and the presence of carbonate range and composite-P90 in the Environ Sci Pollut Res cm-1 3200-3600 and it was observed a big peak at is attributedtothestretchingvibrationofthehydroxylgroupTi-Oand cm-”
New composite material based on Kaolinite, cement, TiO2 for efficient removal of phenol by photocatalysis DOI: 10.1007/s11356-021-13150-y -
Hydroxyl (O-H) confidence 1.0
“Efficacy of larvicidal activity of green synthesized titanium dioxide nanoparticles using Mangifera indica extract & Govindasamy Rajakumar Abdul Abdul Rahuman & Selvaraj Mohana Roopan Ill-Min Chung & Karunanithi Anbarasan Viswanathan Karthi”
Rajakumar 等 - 2015 - Efficacy of larvicidal activity of green synthesiz DOI: 10.1007/s00436-014-4219-8 -
Carboxyl (COOH) confidence 1.0
“Surface modification was confirmed by FTIR using two characteristic peaks located November 2014 12 cm-1 at 1734 and 1594 which occur due to presence of carboxylic and carboxylate functionality on mod13 November 2014 Accepted (Aeroxide©P25)”
Slightly carbomethylated cotton supported TiO2 nanoparticles as self-cleaning fabrics DOI: 10.1016/j.molcata.2014.11.012 -
N h confidence 1.0
“TRD-loaded hydrogels were also investigated for was associated with NH-stretching vibration (Swami Hulle et al., 200°C-205°C, thermal analysis, showing an endothermic peak at 2014;”
Abdullah 等 - 2023 - Formulation of pH-responsive highly swellable hydr DOI: 10.3389/fbioe.2023.1190322 -
Aromatic ring confidence 1.0
“functional groups linking to the far end of aromatic methyl at the far end of aromatic Peaks at June, 2014 Fei W T, et al.”
Fei Wenting 等 - 2014 - Influence of methanol additive on bio-oil stabilit DOI: 10.3965/j.ijabe.20140703.010
Have a spectrum with this band?
Upload your FTIR spectrum and get a full interpretation report — peak assignments with literature citations, library matches, and a literature-backed analysis — in seconds.