What absorbs at 553 cm⁻¹ in an FTIR spectrum?

Quick answer

A band near 553 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 553 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

  “LLM confirmed rule peak-group candidate”

  Okpara 等 - 2020 - Green Wastes Mediated Zinc Oxide Nanoparticles Sy DOI: 10.3390/ma13194241
• Phosphate (PO4) 신뢰도 1.0

  “FTIR spectrum of the sample AP-10MNa (Figure 6(d)) reveals the PO43(cid:3) bands attributed to the vibration of groups (553, 604, 946, 973,”

  Apatitic calcium phosphate/montmorillonite nano-biocomposite: in-situ synthesis, characterization and dissolution properties DOI: 10.1016/j.heliyon.2022.e10042
• 신뢰도 1.0

  “these, a strong band appeared at 553 this was ascribed to the Zn-O stretching”

  Sin 等 - 2015 - Preparation of flower-like ZnO hierarchical struct DOI: 10.1007/s11164-013-1363-1
• Metal oxygen 신뢰도 1.0

  “The absorption peak at 553 results, Zn-Zr MOF-1 was selected for physical adsorption characteristic vibration peak of Zr-O.”

  Zhang 等 - 2022 - Green Photocatalysis of Organic Pollutants by Bime DOI: 10.3389/fchem.2022.918941
• 신뢰도 0.8

  “Text: 'The absorption peak at 553 could indicate the beginning of e r' and earlier reference to external bond.”

  Dahani 等 - 2020 - Direct Transformation of Bangka Kaolin to Zeolite DOI: 10.1063/5.0015933
• 신뢰도 0.8

  “Explicit assignment in text.”

  Cationic Cyclopentadienyliron Complex as a Novel and Successful Nucleating Agent on the Crystallization Behavior of the Biodegradable PHB Polymer DOI: 10.3390/molecules23102703