What absorbs at 717 cm⁻¹ in an FTIR spectrum?

Quick answer

A band near 717 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 717 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

• Metal oxygen 신뢰도 1.0

  “USC cm-1 The characteristic sharp bands for Fe-O stretching were found at 717, 623,557 and 443 which confirmed the formation of magnetite nanoparticles.”

  Mesoporous magnetite nanoparticles synthesis using the Peltophorum pterocarpum pod extract, their antibacterial efficacy against pathogens and ability to remove a pollutant dye DOI: 10.1016/j.molstruc.2018.10.042
• Hydroxyl (O-H) 신뢰도 1.0

  “Description (cm-1) 717 As-OH vibration Symmetry stretch of As-OH As(III) As(OH) 3 2)- 721 As-O vibration Symmetry stretch of As-O AsO(OH”

  The effect of electrocoagulation (EC) on total arsenic, arsenite (As3+) and arsenate (As5+) species removal from model groundwater investigating toxicity and sludge characteristic DOI: 10.1007/s13201-022-01660-0
• Hydroxyl (O-H) 신뢰도 1.0

  “Polarized FTIR spectra of cm-1 films axially stretched CC PPO/carvacrol show that the guest peak at 717 is not dichroic, while the guest peak at cm-1 cm-1 confirms O-H 698 is markedly dichroic.”

  Golla 等 - 2021 - Isolated and aggregated carvacrol guest molecules DOI: 10.1038/s41428-021-00511-0
• Aromatic ring 신뢰도 1.0

  “The corresponding aromatic stretching 717 and 1614cm(cid:5)1”

  A study on the characteristics of Algerian Hassi-Messaoud asphaltenes: solubility and precipitation DOI: 10.1080/10916466.2021.2017457
• Alkyl C-H 신뢰도 1.0

  “The 717 absorption band is designated to the C-H stretching vibration of the CH 3/CH groups.”

  Almousa 等 - 2021 - Paraffin Wax [As a Phase Changing Material (PCM)] DOI: 10.3390/cryst11080951
• Metal oxygen 신뢰도 1.0

  “One visible shoulder peak at ~717 emerged, which is the absorption band of the Fe-O in the FH [26], at the expense of the shoulder peak located at”

  Effects of Potassium Loading over Iron–Silica Interaction, Phase Evolution and Catalytic Behavior of Precipitated Iron-Based Catalysts for Fischer-Tropsch Synthesis DOI: 10.3390/catal12080916
• Chlorine 신뢰도 1.0

  “Explicit assignment in text”

  Fabrication of Chitosan Nanofibers Containing Some Steroidal Compounds as a Drug Delivery System DOI: 10.3390/polym14102094
• Alkyl C-H 신뢰도 1.0

  “The production and packaging of LDPE, the peak wavelength at represents the CH bend, 3 730cm-1, 719cm-1 717cm-1”

  Hossain 等 - 2023 - First evidence of microplastics and their characte DOI: 10.3389/fenvs.2023.1232931