What absorbs at 554 cm⁻¹ in an FTIR spectrum?

Quick answer

A band near 554 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.

可能的官能团归属

排名反映了累积的文献证据，而非单一的权威规则。请始终对照您的样品背景进行确认。

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 554 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.

这些分配背后的文献

• Hydroxyl (O-H) 置信度 1.0

  “Shoulder ≈ 3340 (oxidization) Absent ≈3400 (OH-stretching) spectra/cm-1 554, 641, 1475, 3020 745, 718, 697 Raman”

  Differentiation between copal and amber by their structure and thermal behaviour DOI: 10.1007/s10973-023-12333-8
• Metal oxygen 置信度 1.0

  “cm1 and 554.12 show the stretching vibration of SiNanomater:1-15 O-Si which corresponds to the metal oxide bond.”

  Haque 等 - 2018 - Effect of Different Acids and Solvents on Optical DOI: 10.1007/s12633-016-9464-2
• 置信度 1.0

  “4 cm-1 cm-1 are new bands 554 and 421 which are corresponded to Zn-O bonds intrinsic stretching vibration of tetrahedral sites and Fe-O bonds in octahedral sites, respectively [30].”

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

  “552 The characteristic signals of the CH stretching were detected at around 2875 The peaks cm-1 553 at around 1630, 1550, and 1450 were attributed to C=O stretching (amide I), N-H bending 554 (amide II) and C-CH distorting vibration, respec”

  Effect of glucose-induced Maillard reaction on physical, structural and antioxidant properties of chitosan derivatives-based films DOI: 10.1016/j.carbpol.2020.117341
• 置信度 1.0

  “two bands observed at 1089 and 789 are assigned to the bending vibrations of Si-O-Si The cm-1 cm-1 two absorption bands at 554 and 461 are related to the F-O bond's bending mode existing in the two 442.”

  Superhydrophobic magnetic sorbent via surface modification of banded iron formation for oily water treatment DOI: 10.1038/s41598-022-15187-6
• Carbohydrate 置信度 1.0

  “Both the glucose absorption sorbance in the CrCl3/[BMIM]Cl/glucose peak at 554 cm-1 system with time, and the Pt-Cl stretch vibration band at near and with concomitant change in V-O bond FIR absorbance.”

  Li 和 Zhang - 2016 - Far reaching potentials of far infrared spectrosco DOI: 10.1016/S1872-2067(15)61087-7
• Metal oxygen 置信度 0.9

  “Explicit assignment in text: 'high-frequency peak observed at 554 cm-1 belonging to Fe-O bending'”

  Influence of Ho3+ substitution on structural and magnetic properties of Mg–Mn ferrites DOI: 10.1007/s10854-021-05547-9
• 置信度 0.9

  “Symmetrical pulse vibration at 554 cm-1.”

  Selectively Producing Acetic Acid via Boric Acid-Catalyzed Fast Pyrolysis of Woody Biomass DOI: 10.3390/catal11040494