What absorbs at 3244 cm⁻¹ in an FTIR spectrum?

Quick answer

A band near 3244 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.

Attributions possibles de groupes fonctionnels

Le classement reflète les preuves bibliographiques accumulées, et non une règle faisant autorité. Confirmez toujours dans le contexte de votre échantillon.

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 3244 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.

Bibliographie derrière ces attributions

• Hydroxyl (O-H) confiance 1,0

  “In the ATR-FTIR reference spectrum of Table 3 Analysis of sugars in honey types from different geothree honey types the broad band at 3261.153 to graphical regions of Kashmir valley cm-1 3243.931 might be due to O-H stretching vibration”

  Physicochemical, antioxidant and FTIR-ATR spectroscopy evaluation of Kashmiri honeys as food quality traceability and Himalayan brand DOI: 10.1007/s13197-020-04878-5
• confiance 1,0

  “The bluecm-1 N-H the broadband at 3244 shifting of this band was accentuated as the LiClO is attributed to the 4”

  Gurumendi 等 - 2023 - Enhanced Chitosan Photoluminescence by Incorporati DOI: 10.1021/acsomega.2c08072
• N h confiance 1,0

  “further Melting points were recorded by open capillary cm(cid:2)1): 3462.98, 3376.91, 3337.02 (NH2, hexane (7:3)), FTIR (KBr disc, methodonStuartSMP10andareuncorrected.Silicagelplateswereused NH stretch), 3243.98, 3201.22, 3050.12, 3009.30”

  7-Hydroxy-4-phenyl-1, 2-dihydroquinoline derivatives: synthesis via one-pot, three-component reaction and structure elucidation DOI: 10.1016/j.heliyon.2020.e05035
• confiance 0,95

  “Explicit assignment: gypsum band at ≈3244 cm-1 (2ν (ν of H2O))”

  Chemometrics approach to FT-IR hyperspectral imaging analysis of degradation products in artwork cross-section DOI: 10.1016/j.clay.2010.10.021.
• Hydroxyl (O-H) confiance 0,9

  “Explicit assignment: 'O-H stretching at 3244'.”

  Mineral and chemical changes of sediments after Cu sorption and then desorption induced by synthetic root exudate DOI: 10.1016/j.chemosphere.2019.124393