Hydrogen bond — FTIR absorption peaks and assignments

Quick answer

Hydrogen bond is usually assigned by looking for a recurring cluster of characteristic peaks rather than one exact textbook number. The table below shows where the literature most often places this group in FTIR, ranked by accumulated evidence.

Characteristic FTIR peaks for Hydrogen bond

Showing the 30 best-supported peaks of 578 total for Hydrogen bond.

Spectrum logic

A functional-group assignment becomes more confident when several expected bands appear together. Use this page to find the strongest-supported peaks, then confirm that the same sample exhibits a coherent pattern rather than a single isolated hit.

Real-world usage

These pages are useful for unknown material analysis, peak explanation in reports, polymer troubleshooting, and verifying whether a candidate material family is chemically plausible.

Common mistakes

• Using one functional-group page as a complete material verdict without checking the rest of the spectrum.
• Assuming the strongest band is always the most diagnostic one.
• Forgetting that processing, additives, aging, and mixtures can shift or broaden expected peaks.

Verification advice

Use DSC, GC-MS, or TGA when several material families share similar bands or when mixture effects make the FTIR assignment uncertain.

Literature behind these assignments

• 1723 cm⁻¹ confidence 1.0

  “The other cm21 longed TC-HCl release, PHT-Na release behavior revealed that it peaks such as 1723 and 2941 corresponding to ester and can help the wound dressings to heal the wounds during 24 h carbon-hydrogen bonds in the chemical structur”

  Askari 等 - 2016 - Three-layered electrospun PVAPCLPVA nanofibrous DOI: 10.1002/app.43309
• 635 cm⁻¹ confidence 1.0

  “elements are electronegative element capable of forming reaction on compound can be identified from the peak with (1) intramolecular hydrogen bonding with the hydrogen element from cm-1 which represented the stretching weak intensity at 635”

  Synthesis of a novel 1,4‐bis[2‐(5‐thiophen‐2‐yl)‐1‐benzothiophene]‐2,5‐dioctyloxybenzene pentamer for creatinine detection. DOI: 10.1002/ajoc.202100374
• 3346 cm⁻¹ confidence 1.0

  “2 FTIR spectra of (a) PANI-5% ECMA, (b) PANI-10% ECMA, (c) PANI-15% ECMA, (d) PANI20% ECMA, (e) PANI-50% ECMA and (f) pure ECMA powder cm-1 composites, a broad band at 3346 is assigned to interaction ECMA/PANI by formation of hydrogen bondi”

  Synthesis of novel conducting polyaniline composites based on seaweed Enteromorpha compressa macro-alga powder DOI: 10.1007/s00289-020-03191-7
• 2110 cm⁻¹ confidence 1.0

  “The band at 2110 corresponds to stretching vibrations of Si-H bonds [44,45].”

  Mechanical properties, chemical analysis and evaluation of antimicrobial response of Si-DLC coatings fabricated on AISI 316 LVM substrate by a multi-target DC-RF magnetron sputtering method for potential biomedical applications DOI: 10.1016/j.apsusc.2017.03.223
• 3492 cm⁻¹ confidence 1.0

  “the relative importance of hydrogen bonding dispersive peaks are located at 3492 (RR, SS) and 3488 cm(cid:151)1 (RS) within interactions in chiral recognition.”

  Borho 等 - 2001 - Chiral self-recognition in the gas phase the case DOI: 10.1039/b102382a
• 720 cm⁻¹ confidence 1.0

  “In addition, a 720 cm-1 peak, which is one of the PCM char- (2) the hydrogen bonding between the paraffin and the lignin, cellulose, and hemicellulose”

  n-Heptadecane-Impregnated Wood as a Potential Material for Energy-Saving Buildings DOI: 10.3390/f13122137
• 1585 cm⁻¹ confidence 1.0

  “A strong absorption cm-1 peak at 1585 is attributed intramolecular H bonds of the alcohols group.”

  Chen 等 - 2019 - Baltic amber or Burmese amber FTIR studies on amb DOI: 10.1016/j.saa.2019.117270
• 1167 cm⁻¹ confidence 1.0

  “FTIR spectrum of ion implanted Kapton-H sample at the dose of cm-1 The reduction in the intensity and broadening of the small intensity band at position 1167 (C-H stretching) indicates the breakage of C-H bonds.”

  Chhokkar 等 - 2020 - Electrical and Structural Characterization of 100 DOI: 10.1063/5.0023335