What absorbs at 1132 cm⁻¹ in an FTIR spectrum?

Quick answer

A band near 1132 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 1132 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

• Acetate 置信度 1.0

  “This means that increasing the J Mater Sci: Mater Electron cm-1 3-, the absorption peak at 1132 is peak of NO the characteristic peak of C-O bond, and the cm-1 absorption peak at 883 it may be due to the”

  Annealing temperature on the microstructure and magnetic properties of magnesium–cobalt ferrite prepared by sol-gel self-propagating method DOI: 10.1007/s10854-020-04778-6
• Acetate 置信度 1.0

  “cm-1) corresponding to the replacement of OH groups by NH2 groups on shoulder (3345 cm-1, cm-1,and cm-1 the surface of CG [8].We can also identify bands at 1132 1078 1013 cm-1, 1078 cm-1,and 1013 cm-1 the surface of CG [8].We can also ident”

  Influence of Reduction with NaBH4 and HCl in Obtaining Amino Derivatives of Cashew Gum and Cytotoxic Profile DOI: 10.3390/polym15132856
• Amide 置信度 1.0

  “The cm-1, negatively weighted peak at 1245 was due to amide III, and the negative weighted peaks around 1132 and cm-1 vibration31,32.”

  Soil-applied selenite increases selenium and reduces cadmium in roots of Moringa oleifera DOI: 10.1038/s41598-020-77350-1
• Sulfate (SO4) 置信度 1.0

  “February FTIR spectra of BSA, sodium sulfate, and goethite14,15,23,26,36,37 cm-1, spectrum that there is a strong absorption band at 1132 a under y (cm-1) which corresponds to the asymmetric sulfate stretching Wavenumber Vibrational peak as”

  Kim 和 Grassian - 2023 - Analysis of microand nanoscale heterogeneities w DOI: 10.1039/d3em00005b
• Silicon (Si) 置信度 1.0

  “cm-1 cm-1 690 (curve 1) and 908 (curve 2) peak are 1267 3475 1473 1643 Si-Oassigned to the Si-O symmetric stretch and to the 1132 (3)”

  Rangelova 等 - 2011 - MethylcelluloseSiO2 hybrids sol-gel preparation DOI: 10.2478/s11532-010-0123-y
• Amide 置信度 1.0

  “The spectrum for PEI cm-1 cm-1 shows the bands at 3263 (N-H stretch), 1474 (N-H bending), cm-1 cm-1 1132 (C-N stretch) and 750 (N-H bending) typical for this”

  Shan 等 - 2020 - Polymer structure and property effects on solid di DOI: 10.1016/j.ijpharm.2020.119884
• Acetate 置信度 1.0

  “1131.90 cm-1 are assigned to the stretching vibration of C-O-C in xanthate.”

  Yu 等 - 2016 - The Desulfurization of Magnetite Ore by Flotation DOI: 10.3390/min6030070
• Amide 置信度 1.0

  “This is indicated by the presence of the C-N stretch cm-1 at 1132 in the TEPA-treated CQD as compared to that of untreated CQD (PL 4 180).”

  de Yro 等 - 2019 - Hydrothermal Synthesis of Carbon Quantum Dots from DOI: 10.1063/1.5094310