What absorbs at 801 cm⁻¹ in an FTIR spectrum?

Quick answer

A band near 801 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 801 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

• Silicon (Si) 신뢰도 1.0

  “In addition, BSNs showed a band at cm-1, 801 About 50,000 human colon cancer cells were seeded in each which was assigned to the symmetric stretching Si-O-Si vibration of [29].”

  Fabrication of Biogenic Silica Nanostructures from Sorghum bicolor Leaves for Food Industry Applications DOI: 10.1007/s12633-020-00379-4
• 신뢰도 1.0

  “by cm-1 Si-O symmetrical stretching vibration to 801 value of wavenumber and Si-O”

  Huseynov 等 - 2018 - Fourier transform infrared spectroscopic study of DOI: 10.1142/S0217979218500741
• Aromatic ring 신뢰도 1.0

  “The benzene ring's =C-H bending vibration absorption peaks and benzene ring framework 886cm-1, 823cm-1 801cm-1.”

  Li 等 - 2011 - The detection of Cypermethrin on the surface of Ap DOI: 10.4028/www.scientific.net/AMR.287-290.2991
• Silicon-oxygen (Si-O) 신뢰도 1.0

  “After reaction with SiO 2, the hybrid cm-1, cm-1, materials SiO 2/DAC exhibited new characteristic peaks located at 1067, 795 and 468 as well as SiO 2/DAC exhibited new characteristic peaks located at 1067, 795 and 468 as well as 1060, 801”

  Ding 等 - 2018 - The Preparation of Nano-SiO2Dialdehyde Cellulose DOI: 10.3390/polym10050550
• Silicon (Si) 신뢰도 1.0

  “Furthermore, the spectra of the samples cm-1, modified with polysiloxanes contain bands at 801 and 1260 originating from Si-O-Si symmetric stretching vibrations and the Si-O-C stretching vibration shoulder, respectively.”

  Gieparda 等 - 2023 - Polysiloxanes and Silanes with Various Functional DOI: 10.3390/ma16103839
• 신뢰도 1.0

  “ESI-MS molecular-ion peak 801.26, corresponding to H+ + 1H [Zn(L2) ].”

  Gusev 等 - 2020 - Synthesis, Photoluminescence and Electrical Study DOI: 10.3390/ma13245698
• C c single bond 신뢰도 1.0

  “There are also bands at 801 cm-1 can be assigned to vibrations of C-C bonds in the pyrrole ring.”

  Sodium Copper Chlorophyllin Immobilization onto Hippospongia communis Marine Demosponge Skeleton and Its Antibacterial Activity DOI: 10.3390/ijms17101564
• Metal oxygen 신뢰도 1.0

  “The band at 619 cm-1 is attributed to W-O stretching vibration, while bands cm-1 801 and 762 are attributed to the inter-bridge stretching O-W-O and the corner-sharing mode at 801 and 762 cm-1 are attributed to the inter-bridge stretching O”

  Petruleviciene 等 - 2020 - Tuning the Photo-Luminescence Properties of WO(3)L DOI: 10.3390/ma13122814