Thiocarbonyl — FTIR absorption peaks and assignments
These are the characteristic FTIR wavenumbers where Thiocarbonyl tends to absorb, compiled from published literature and ranked by supporting evidence. Each assignment is traceable to a source (DOI) and cross-validated against our 130,000+ reference spectra and knowledge graph.
Backed by 8 cited sources
Quick answer
Thiocarbonyl 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 Thiocarbonyl
| Wavenumber (cm⁻¹) | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| 1160 | 2 | 2 | 1.0 |
| 1078 | 1 | 1 | 1.0 |
| 2143 | 1 | 1 | 1.0 |
| 1263 | 1 | 1 | 1.0 |
| 1048 | 1 | 1 | 1.0 |
| 1027 | 1 | 1 | 1.0 |
| 1062 | 1 | 1 | 1.0 |
| 2082 | 1 | 1 | 1.0 |
| 802 | 1 | 1 | 1.0 |
| 1253 | 1 | 1 | 1.0 |
| 1035 | 1 | 1 | 1.0 |
| 775 | 1 | 1 | 1.0 |
| 1021 | 1 | 1 | 1.0 |
| 1044 | 1 | 1 | 1.0 |
| 1261 | 1 | 1 | 1.0 |
| 1040 | 1 | 1 | 1.0 |
| 1022 | 1 | 1 | 1.0 |
| 1112 | 1 | 1 | 1.0 |
| 1069 | 1 | 1 | 1.0 |
| 1777 | 1 | 1 | 1.0 |
| 1089 | 1 | 1 | 1.0 |
| 1151 | 1 | 1 | 1.0 |
| 1292 | 1 | 1 | 1.0 |
| 2014 | 1 | 1 | 1.0 |
| 2318 | 1 | 1 | 1.0 |
| 1192 | 1 | 1 | 1.0 |
| 1601 | 1 | 1 | 1.0 |
| 1114 | 1 | 1 | 1.0 |
| 1064 | 1 | 1 | 1.0 |
| 1326 | 1 | 1 | 1.0 |
Showing the 30 best-supported peaks of 39 total for Thiocarbonyl.
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
-
1310 cm⁻¹ confidence 1.0
“Two bands at 1310 and ν(C are assigned to thiocarbonyl S) stretching and bending 3.2.”
Chikate 和 Padhye - 2007 - Transition metal quinone-thiosemicarbazone complex DOI: 10.1016/j.saa.2006.05.017 -
1008 cm⁻¹ confidence 1.0
“Explicit assignment as absorption peak of C=S”
Haezam 等 - 2021 - Synthesis and cytotoxic activity of organotin(IV) DOI: 10.1016/j.sjbs.2021.02.060 -
1500 cm⁻¹ confidence 1.0
“In view of the results obtained for 30 phr zinc thiolate before swelling, an absorption peak at 1500 representing the characteristics absorption peak of C=S was observed [9].”
Room temperature self-healing natural rubber based on ionic supramolecular network DOI: 10.1063/5.0016183 -
1160 cm⁻¹ confidence 1.0
“The spectra has at 1160 cm-1 and 1100 cm-1 can be assigned to the -C=S stretching vibration in thiocarbonyl cm´1 cm´1, cm´1”
Biosorption of B-aflatoxins Using Biomasses Obtained from Formosa Firethorn [Pyracantha koidzumii (Hayata) Rehder] DOI: 10.3390/toxins8070218 -
1000 cm⁻¹ confidence 1.0
“The bands between 1000 and 1050 cm-1 are due to the vibration C=S [44].”
Castellon 等 - 2020 - Depression of Pyrite in Seawater Flotation by Guar DOI: 10.3390/met10020239 -
1326 cm⁻¹ confidence 1.0
“The FTIR spectrum of cm-1 the HNT-TSC-PC showed the characteristic bands of HNTs included, 1649, 539 and 3621-3696 as well as cm-1, two additional band at 1326 which is representative of C=S stretching and the strong absorption peaks of”
Investigation of halloysite nanotubes and Schiff base combination with deposited copper iodide nanoparticles as a novel heterogeneous catalytic system DOI: 10.1038/s41598-021-02991-9 -
1064 cm⁻¹ confidence 1.0
“In the IR spectrum of PBX, the peak at 1064 cm-1 is attributed cm-1 C=S stretching vibration.”
Flotation and Adsorption of a New Polysaccharide Depressant on Pyrite and Talc in the Presence of a Pre-Adsorbed Xanthate Collector DOI: 10.3390/min7030040 -
1601 cm⁻¹ confidence 1.0
“cm-1 The sharp peak at 1600.92 correspond to presence 0.35 of C=S heteroatom in BFMT dye.”
Synthesis, characterization and application of novel 1, 3-bis[(furan-2-l)methylene]thiourea functional dye on wool and cotton fabrics DOI: 10.1007/s42452-020-03653-7
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