What absorbs at 1117 cm⁻¹ in an FTIR spectrum?

Quick answer

A band near 1117 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

순위는 단일 권위 규칙이 아닌 축적된 문헌 증거를 반영합니다. 항상 샘플 상황에 대해 확인하세요.

Possible materials

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 1117 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

• Hydroxyl (O-H) 신뢰도 1.0

  “The peaks at 3451.963 cm-1 correspond to O-H stretching and and 1116.503 deformation, respectively, assigned to the water adsorption on the metal surface [23].”

  Farhat 等 - 2018 - Synthesis and Characterization of Er-Doped Nano Zn DOI: 10.1007/s10948-017-4548-9
• Acetate 신뢰도 1.0

  “1034.74 1034.74 C-O stretch, C-N stretch twisting, C-O-C stretch1116.71 1155 1174.57 1171.68 CH 2 ing C-H ring (in plane bend)”

  Ganesan 等 - 2018 - The effect of titanium dioxide nano-filler on the DOI: 10.1007/s10854-018-8815-8
• C-O single bond 신뢰도 1.0

  “identified around 1253 Finally, the sharp peak at 1117cm(cid:1)1 CAOAC can be assigned to stretching within the ether 811cm(cid:1)1”

  Development of bioactive fish gelatin/chitosan nanoparticles composite films with antimicrobial properties DOI: 10.1016/j.foodchem.2015.09.004
• Fatty acid 신뢰도 1.0

  “andofsmallchangesintherelativepeakintensity(absorbancies),escm-1 cm-1 pecially at frequency region of about 3007 and 1117 cm-1 Peak area of fatty acid x (Fig.”

  The chemometrics approach applied to FTIR spectral data for the analysis of rice bran oil in extra virgin olive oil DOI: 10.1016/j.chemolab.2011.10.010
• 신뢰도 1.0

  “the peak at 1117 attributes to the S-O vibrations of SO and the peaks at 980, 516, cm1 and 463 correspond to the vibrations of Si-O in the gel (Mollah et al., 2000).”

  FTIR study on early age hydration of carbon nanotubes modified cement-based materials DOI: 10.1680/jadcr.16.00167
• Acetate 신뢰도 1.0

  “cm-1 cm-1, peaks at 1117 and 1130 that corresponds to CO cm-1 1164 was previously recorded to change in both shape 48 stretching vibration of C-O-P of ribose (RNA).”

  Song 和 Kazarian - 2020 - Effect of Controlled Humidity and Tissue Hydration DOI: 10.1021/acs.analchem.0c01002
• Silicon (Si) 신뢰도 1.0

  “A medium band appeared cm-1 cm-1 at 1117 correspond to the apical Si-O vibrations [20-22].”

  Souissi 等 - 2022 - Synthesis, Thermal Properties and Electrical Condu DOI: 10.21203/rs.3.rs-1294285/v1
• Aromatic ring 신뢰도 1.0

  “The peak ranging at 1743.65 shows the C-C synthesized ZnO nanoparticles were subjected to IR radiation C=O stretch of the weak amine group and the stretch in cm-1 aromatic ring was discerned by peak at 1116.78 [39].”

  Tetraselmis indica Mediated Green Synthesis of Zinc Oxide (ZnO) Nanoparticles and Evaluating Its Antibacterial, Antioxidant, and Hemolytic Activity DOI: 10.1007/s12668-020-00817-y