What absorbs at 1194 cm⁻¹ in an FTIR spectrum?

Quick answer

A band near 1194 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.

Possible functional-group assignments

Ranking reflects accumulated literature evidence, not a single authoritative rule. Always confirm against your sample context.

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 1194 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.

Literature behind these assignments

• N-O bond confidence 1.0

  “28 cm(cid:1)1 OMO-100, the peak at 1194 represents the stretching of licensed on Specication Sl no.”

  Evaluation of the performance and emission and spectroscopic analysis of an improved soy methyl ester DOI: 10.1039/c9ra04342j
• Acetate confidence 1.0

  “In this spectrum, the sharp peak at 1194.43 is assigned to C-O-B stretching vibration, which confirmed the formation of crosslinking of PVA with BA [49, 50].”

  Sprayed in-situ synthesis of Polyvinyl alcohol/Chitosan loaded Silver nanocomposite hydrogel for improved antibacterial effects DOI: 10.1016/j.ijbiomac.2019.09.186
• Acetate confidence 1.0

  “FTIR spectroscopy peak absorbance in 1732.81 who is the peak absor- @ bance of carbonyl bond (C O) and two peaks absorbance cm(cid:2)1 m The chemical structure of bitumen is complex and bituof stretching vibration (1193.61 for and”

  Li 等 - 2008 - The research of GMA-g-LDPE modified Qinhuangdao bi DOI: 10.1016/j.conbuildmat.2007.03.007
• Phosphate (PO4) confidence 1.0

  “0 :2 6 Symmetric stretching vibrations of non-bridging ~ 1194 (Q2) oxygens O-P-O (Q2) ~ 1266 Symmetric stretching vibrations of P=O (Q2) ~ 1388 Asymmetric stretching vibrations of P=O”

  Andronache 和 Racolta - 2014 - Structural Investigation of MO center dot P2O5 cen DOI: 10.1063/1.4903024
• Phosphate (PO4) confidence 1.0

  “LLM confirmed rule peak-group candidate”

  Dai 等 - 2020 - Effects of a Reactive Phosphorus-Sulfur Containing DOI: 10.3390/polym12071441
• confidence 1.0

  “the peaks at cm-1 cm-1 cm-1 1194 and 1163 for aromatic C-N stretching vibrations.”

  Unveiling the role of novel biogenic functionalized CuFe hybrid nanocomposites in boosting anticancer, antimicrobial and biosorption activities DOI: 10.1038/s41598-021-87363-z
• Acetate confidence 1.0

  “spectra have a C-H bond/wavelength with length ranging from 2800 to 3000 In cm-1 D50::S70:M30, and D50::S80:M20, the peak reported at 1194 is due to the stretching of O-CH 3, which is a trace of FAME.”

  Hasnain 等 - 2023 - Performance, Emission, and Spectroscopic Analysis DOI: 10.3390/su15097415
• Acetate confidence 1.0

  “All three cm-1 cm-1 azo compounds exhibit a specific peak at 1194 (Mono_A) and 1190 (Di_A C-O and Tris_A) corresponding to the band stretching phenol.”

  Synthesis, Characterization, DFT Study and Antifungal Activities of Some Novel 2-(Phenyldiazenyl)phenol Based Azo Dyes DOI: 10.3390/ma15228162