What absorbs at 2363 cm⁻¹ in an FTIR spectrum?

Quick answer

A band near 2363 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 2363 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

• Carbon dioxide 신뢰도 1.0

  “The band at 2363 is due to cm-1 CO2, which is generally observed in IR spectra.”

  Choubey 等 - 2007 - Influence of doping on OH absorption in LiNbO3 cry DOI: 10.1002/crat.200610894
• Metal oxygen 신뢰도 1.0

  “The bands that appear in the range 1148-1464 occur as a result of Metal-Oxygen-Metal (M-O-M) such 14 cm-1 as Fe-O-Fe and Co-O-Co [28].The presence of CO is evident by the observation of the band at 2363 15 2”

  Mohammed 等 - 2018 - Effect of heat-treatment on the magnetic and optic DOI: 10.1088/2053-1591/aad1e5
• Carbon dioxide 신뢰도 1.0

  “LLM confirmed rule peak-group candidate”

  Singh 等 - 2012 - Detection of Defects in ZnO Nanoparticles by Spect DOI: 10.1063/1.4736887
• Carbon dioxide 신뢰도 1.0

  “The significant peak at 1628 cm-1 around 2363 might have been due to stretching O=C=O in CO 2.”

  Mesoporous Magnetic Cysteine Functionalized Chitosan Nanocomposite for Selective Uranyl Ions Sorption: Experimental, Structural Characterization, and Mechanistic Studies DOI: 10.3390/polym14132568
• Nitrile 신뢰도 1.0

  “A strong peak at 2363 can be attributed cm-1 C≡N to stretching in nitriles [55] and O=C=O stretching in CO [56].”

  Thermal Hazard and Smoke Toxicity Assessment of Building Polymers Incorporating TGA and FTIR—Integrated Cone Calorimeter Arrangement DOI: 10.3390/fire5050139
• N h 신뢰도 1.0

  “After modified by 2-aminoethanol, the FTIR Polymers 2020, 12, x FOR PEER REVIEW 4 of 13 peaks at 2363 cm-1 and 2342 cm-1, which are assigned to NH+ in rhodamine 6G, disappear.”

  A Fluorescent Polyurethane with Covalently Cross-Linked Rhodamine Derivatives DOI: 10.3390/polym12091989
• 신뢰도 0.7

  “Band at 2363 associated with Lewis acid centers.”

  Comparative study of the strongest solid Lewis acids known: ACF and HS-AlF3 DOI: 10.1039/c8dt03279c