What absorbs at 1307 cm⁻¹ in an FTIR spectrum?

Quick answer

A band near 1307 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 1307 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

• C-O single bond 신뢰도 1.0

  “On the other hand, the characteristic IR Soluplus1 (C(cid:1)(cid:1)O ((cid:1)(cid:1)C(cid:1)(cid:1)O ring), absorption 1307 of acidic group), 1223 stretching, ether bands and their assignments for pure and Soluplus1are (C(cid:1)(cid:1)Cl) 3”

  Thermoanalytical and Fourier transform infrared spectral curve-fitting techniques used to investigate the amorphous indomethacin formation and its physical stability in Indomethacin-Soluplus® solid dispersions DOI: 10.1016/j.ijpharm.2015.10.042
• Amide 신뢰도 1.0

  “The peak at 1163 is because of the presence of thequinonoidring(N]Q]N)andthepeakat1307cm(cid:1)1isdue cm(cid:1)1 C-N to the stretching mode vibrations.”

  Facile simultaneous synthesis of tetraaniline nanostructures/silver nanoparticles as heterogeneous catalyst for the efficient catalytic reduction of 4-nitrophenol to 4-aminophenol DOI: 10.1039/d0ra03327h
• Boron nitrogen 신뢰도 1.0

  “without a negative bias voltage shows two bands, at 1307 and 786 These bands represent the in-plane (B-N) stretching mode and out-of-plane (B-N-B) bending modes sp2 (h-BN) of the bonded hexagonal phase, respectively [35,36].”

  Bias-Enhanced Formation of Metastable and Multiphase Boron Nitride Coating in Microwave Plasma Chemical Vapor Deposition DOI: 10.3390/ma14237167
• Acetate 신뢰도 1.0

  “-C-Nstretching 1358, 1348 - - - - - - - 1360 - 1357 C-O stretching - - - - - - - - - - 1307 ester -C-O-C stretch-”

  Mikolaszek 等 - 2022 - Microscopic and Spectroscopic Imaging and Thermal DOI: 10.3390/polym14142888
• Acetate 신뢰도 1.0

  “The absorption peaks at the 1307 and 1170 regions are assigned to -C-O-C -C-O-C vibrations [35].”

  Influence of Oxygen Diffusion on Thermal Ageing of Cross-Linked Polyethylene Cable Insulation DOI: 10.3390/ma13092056
• Alkyl C-H 신뢰도 1.0

  “Polymers 2021, 13, x 8 of 16 1307 cm-1 corresponds to a -CH 2-group (amide III), due to the formation of CO-NH components of protein.”

  Isolation of Chitin from Black Soldier Fly (Hermetia illucens) and Its Usage to Metal Sorption DOI: 10.3390/polym13050818
• 신뢰도 0.9

  “Explicit assignment in text.”

  Juarez-de la Rosa 等 - 2012 - Effects of thermal treatments on the structure of DOI: 10.1007/s10853-011-5878-9