What absorbs at 614 cm⁻¹ in an FTIR spectrum?

Quick answer

A band near 614 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.

可能性のある官能基アサイン

ランキングは蓄積された文献証拠を反映しており、単一の権威あるルールではありません。常にサンプルのコンテキストと照合して確認してください。

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 614 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.

これらのアサインの根拠となる文献

• Silicon (Si) 信頼度 1.0

  “The IR absorption cm(cid:0) cm(cid:0) 1 1 and 1109 were noted on both bands centered around 614 pristine and irradiated samples, which correspond to the Si-Si bond and Si-O-Si -22].”

  Ion beam induced modification and nanostructures formation in thin SiC/Pd films on c-Si substrate DOI: 10.1016/j.nimb.2021.01.018
• Ester 信頼度 1.0

  “were present in both FTIR spectra of plant extract and FeNPs, such as alkyl halides, alkynes, aromatics and aliphatic amines, esters, ethers, alcohol, carboxylic acids, and nitro Nanomaterials2022,12,2404 11of25 compounds with peaks at 526.”

  Green Synthesis and Characterization of Iron Nanoparticles Synthesized from Aqueous Leaf Extract of Vitex leucoxylon and Its Biomedical Applications DOI: 10.3390/nano12142404
• Alkyl C-H 信頼度 1.0

  “Trans -CH and cis -CH wagging modes may be seen at 958 and 614 cm-1 respectively.”

  Ramadan 和 Ismail - 2022 - Tunning the Physical Properties of PVDFPVCZinc F DOI: 10.21203/rs.3.rs-935328/v1
• 信頼度 1.0

  “With the 8:26:54 shi increase of the Mn content, the larger in the absorption cm(cid:3)1 x-ZnO peak at 614 may be ascribed to the doping of Mn.”

  Improved NO reduction by using metal–organic framework derived MnOx–ZnO DOI: 10.1039/d0ra04161k
• 信頼度 0.9

  “Band at 614 cm-1 corresponds to elongation vibration of S-O bond of sodium sulfate.”

  Anthropological and analytical studies of two Egyptian human mummies' heads from Deir-el-Medineh DOI: 10.1016/j.matlet.2022.133265
• Metal oxygen 信頼度 0.8

  “Assigned to octahedral site of cobalt oxide.”

  External magnetic field effects on the characteristics of cobalt nanoparticles prepared by pulsed laser ablation DOI: 10.1007/s11082-020-02694-x
• 信頼度 0.8

  “Bands around 763 and/or 614 for alpha phase.”

  A critical analysis of the α, β and γ phases in poly(vinylidene fluoride) using FTIR DOI: 10.1039/c7ra01267e