S s — FTIR absorption peaks and assignments

Quick answer

S s 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 S s

Showing the 30 best-supported peaks of 44 total for S s.

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

• 2014 cm⁻¹ confidence 1.0

  “22.88(cid:1)0.23 16.58(cid:1)0.33 29.09(cid:1)0.23 C S-S vibration(disulfides) 2014).”

  Physico-chemodiversity variation between the most common calcareous red seaweed, Eastern Harbor, Alexandria, Egypt DOI: 10.1016/j.heliyon.2022.e12457
• 3850 cm⁻¹ confidence 1.0

  “FT2O stretch, IR spectra showed that acticarbon had eight characteristic peaks, such as S-S stretch, H cm(cid:1)1, OAH ACAH C‚O C‚C CAH stretch, stretch, or stretch, CH bend, were at 3850 2”

  Adsorption characteristics of sulfur solution by acticarbon against drinking-water toxicosis DOI: 10.1016/j.sjbs.2016.09.010
• 509 cm⁻¹ confidence 1.0

  “SWSS topril and HSA as a noncovalent interaction, rather than S-S The peak at 509 or 510 cm-' related to formation also interchange reactions (21).”

  Vibrational Spectroscopic Studies on the Disulfide Formation and Secondary Conformational Changes of Captopril–HSA Mixture after UV‐B Irradiation DOI: 10.1562/2005-04-25-RN-497
• 1409 cm⁻¹ confidence 1.0

  “Peak A (1409 bands are CH while modes 20 and 21 are the in-phase and out-of-phase CH s s”

  CH Mode Mixing Determines the Band Shape of the Carboxylate Symmetric Stretch in Apo-EDTA, Ca2+–EDTA, and Mg2+–EDTA DOI: 10.1021/acs.jpca.1c03061
• 530 cm⁻¹ confidence 1.0

  “Among several electrodes, most cm-1 a new sharp band near 530 due to the formation of SS bonds widely used are carbon-based electrodes such as glassy carbon suggesting formation of formamidine disulfide (FD) ions.”

  Heterogeneous Kinetics of Thiourea Electro‐Catalytic Oxidation Reactions on Palladium Surface in Aqueous Medium DOI: 10.1002/asia.202001016
• 1210 cm⁻¹ confidence 1.0

  “In addition, the band f f cm-1 at 1183 in the S S and S S transitions, at shapes slightly changed, retaining an overall spectral 1 2 2 3 ∼1201 ∼1210 cm-1 and observed in all four transitions, feature;”

  Monitoring Water Reactions during the S-State Cycle of the Photosynthetic Water-Oxidizing Center: Detection of the DOD Bending Vibrations by Means of Fourier Transform Infrared Spectroscopy DOI: 10.1021/bi801580e
• 707 cm⁻¹ confidence 1.0

  “LLM confirmed rule peak-group candidate”

  Determination of alliin and allicin in the plant of Allium scorodoprasum L. subsp. rotundum by using the infrared spectroscopy technique DOI: 10.17660/ActaHortic.2016.1143.19
• 473 cm⁻¹ confidence 1.0

  “473cm-1, S-S detected at assigned to be the stretching mode of IshiiM,ShibataK,NozakiH.JSolidStateChem1993;105:504-11.”

  Characterization of copper sulfide nanostructured spheres and nanotubes synthesized by microwave-assisted solvothermal method DOI: 10.1016/j.matlet.2009.10.021