What absorbs at 2358 cm⁻¹ in an FTIR spectrum?
A band near 2358 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 2358 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.
가능한 작용기 할당
| 작용기 | 지원 사실 | 인용 출처 | 최고 신뢰도 |
|---|---|---|---|
| Carbon dioxide | 6 | 6 | 1.0 |
| Methacrylate | 4 | 4 | 1.0 |
| Acetate | 4 | 4 | 1.0 |
| C-O single bond | 3 | 3 | 1.0 |
| Alkyl C-H | 3 | 1 | 1.0 |
| Methoxy (OCH3) | 2 | 2 | 1.0 |
| Hydroxyl (O-H) | 2 | 2 | 1.0 |
| Alkene (C=C) | 2 | 2 | 1.0 |
| Ketone | 2 | 2 | 1.0 |
| Ester | 2 | 2 | 1.0 |
| Carboxyl (COOH) | 2 | 2 | 1.0 |
| Carbonyl (C=O) | 2 | 2 | 1.0 |
| Amide | 2 | 2 | 1.0 |
| Oxygen heterocycle | 1 | 1 | 1.0 |
| Hydrogen bond | 1 | 1 | 1.0 |
| Metal oxygen | 1 | 1 | 1.0 |
| Adsorbed carbon monoxide | 1 | 1 | 0.9 |
순위는 단일 권위 규칙이 아닌 축적된 문헌 증거를 반영합니다. 항상 샘플 상황에 대해 확인하세요.
Possible materials
| 재료 | 지원 피크 | Overlapping groups | 인용 출처 |
|---|---|---|---|
| PMMA | 2358, 1722, 1383 | Methacrylate, Acetate, C-O single bond | 1 |
| CdS | 2358, 1375, 1092 | Methacrylate, C-O single bond, Acetate | 1 |
| lignin | 2358, 1035, 1510 | Methacrylate, Acetate, C-O single bond | 1 |
| rGO | 2358, 2930, 1645 | Methacrylate, Acetate, C-O single bond | 1 |
| Fe3O4 | 2358, 1673, 2923 | Methacrylate, Acetate | 1 |
| saliva | 2358, 1648, 1664 | 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 2358 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.
이 할당의 배경이 되는 문헌
-
Carbon dioxide 신뢰도 1.0
“Broad [20, 35] vibration 2358 vibrational CO Carbon dioxide Sharp”
Aziz 等 - 2023 - Water remediation capability of cubic-phase CdS na DOI: 10.15251/DJNB.2023.181.203 -
신뢰도 1.0
“FTIR results shows the chemical bonding at around 580.96 1191.61 Journal 1, cm-1, 2358.27cm-1, cm-1 cm-1attributes 1559.36 2987.45 and 3360 for the Fe-O, CO, C=C,C=O, C-H 2and O-H bonds respectively whereas Raman shift for Fe 3O was 4 cm-1.”
Devi 等 - 2020 - Investigation of chemical bonding and supercapacit DOI: 10.1016/j.diamond.2020.107756 -
Carbon dioxide 신뢰도 1.0
“2659 Unassigned band O�C�O 2358 stretching Carbon dioxide 2322 Unassigned band”
Ferreira 等 - 2020 - Attenuated Total Reflection-Fourier Transform Infr DOI: 10.1155/2020/4343590 -
Acetate 신뢰도 1.0
“The peak at 2358 is assigned to the cm-1 C=O”
Liang 等 - 2020 - Thermal Kinetics of a Lignin-Based Flame Retardant DOI: 10.3390/polym12092123 -
Carbon dioxide 신뢰도 1.0
“Negligible change in the intensity of the peak at ~2358 cm-1 (attributed to free CO 2) indicates the insignificant amount of CO gas evolved in the 2”
Prasad 和 Lal - 2023 - Spectroscopic Investigations of Optical Bandgap an DOI: 10.33263/BRIAC132.187 -
Acetate 신뢰도 1.0
“The peak situated cm-1 at 2358 is due to the C-O stretching mode resulting from the adsorption of CO on the surface of the nano2 particles [61].”
Punia 等 - 2021 - Microstructural, Optical and Magnetic Study of Ni- DOI: 10.1007/s10948-021-05967-y -
Alkene (C=C) 신뢰도 1.0
“The peak at 2923 represents C-H group with stretched vibration S cm-1 of strong intensity and the peak at 2358 shows C=C with stretched vibration.”
Yazhiniprabha 和 Vaseeharan - 2019 - In vitro and in vivo toxicity assessment of seleni DOI: 10.1016/j.msec.2019.109763 -
Carbon dioxide 신뢰도 1.0
“The evolved carbon dioxide molecules give rise to the characteristic bands at 2358, evolved carbon dioxide molecules give rise to the characteristic bands at 2358, 2322 and [24].”
TG-DSC and TG-FTIR Studies of Annelated Triazinylacetic Acid Ethyl Esters—Potential Anticancer Agents DOI: 10.3390/molecules28041735
이 밴드가 있는 스펙트럼이 있나요?
FTIR 스펙트럼을 업로드하면 몇 초 안에 전체 해석 보고서(문헌 인용이 포함된 피크 할당, 라이브러리 매칭, 신뢰도 평가 증거 체인)를 받을 수 있습니다.