What absorbs at 1124 cm⁻¹ in an FTIR spectrum?
A band near 1124 cm⁻¹ can point to several functional groups. Below are the most likely assignments, ranked by how much published evidence supports each — every one traceable to literature (DOI) and cross-validated against our 130,000+ reference spectra and knowledge graph.
Backed by 7 cited sources
Possible functional-group assignments
| Functional group | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| C-O single bond | 3 | 2 | 0.9 |
| Ester | 1 | 1 | 1.0 |
| Sulfate (SO4) | 1 | 1 | 0.9 |
Ranking reflects accumulated literature evidence, not a single authoritative rule. Always confirm against your sample context.
Literature behind these assignments
-
Ester confidence 1.0
“IR spectrum in KBr showed absorption bands at cm-1 1729, 1288, 1124 due to the presence of ester group.”
Sisay 等 - 2021 - PHYTOCHEMICAL STUDIES OF MELILOTUS OFFICINALIS DOI: 10.4314/bcse.v35i1.12 -
confidence 0.9
“Text states '1124cm-1 band' confirms 'direct bonding between Ti and C atoms'.”
Kumar 等 - 2019 - Effect of co-sensitization in solar exfoliated TiO DOI: 10.1016/j.mssp.2019.02.027 -
confidence 0.9
“Assigned to sulbactam.”
Ali 等 - 2017 - Solid-State FTIR Spectroscopic Study of Two Binary DOI: 10.1155/2017/5673214 -
C-O single bond confidence 0.9
“C-O stretching vibration”
Ma 等 - 2020 - Simultaneous adsorption and reduction of hexavalen DOI: 10.2166/wst.2020.392 -
C-O single bond confidence 0.9
“Explicit assignment in text.”
Mohamad 和 Fahmy - 2020 - Niosomes and liposomes as promising carriers for d DOI: 10.1590/s2175-97902019000318096 -
Sulfate (SO4) confidence 0.9
“Intense band at 1124 cm-1 reflects splitting of ν3(SO4) fundamental”
Singovszka 和 Balintova - 2017 - FTIR Spectra Analysis of Sediment Influenced by Ac DOI: 10.3846/enviro.2017.003 -
confidence 0.7
“Characteristic absorption peaks at 1124 cm-1 confirming loading of naringin and bromocresol purple”
Li 等 - 2021 - Preparation of pH-sensitive polylactic acid-naring DOI: 10.1016/j.ijbiomac.2021.08.087
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