What absorbs at 1099 cm⁻¹ in an FTIR spectrum?
A band near 1099 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 6 cited sources
Possible functional-group assignments
| Functional group | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| Siloxane (Si-O-Si) | 2 | 2 | 0.9 |
| Silicon-oxygen (Si-O) | 1 | 1 | 0.9 |
| C-O single bond | 1 | 1 | 0.9 |
| Sulfate (SO4) | 1 | 1 | 0.85 |
Ranking reflects accumulated literature evidence, not a single authoritative rule. Always confirm against your sample context.
Literature behind these assignments
-
C-O single bond confidence 0.9
“C-O-C stretching vibration.”
Abidin 等 - 2019 - Influence of the synthesis parameters on the prope DOI: 10.1088/1757-899X/509/1/012024 -
Silicon-oxygen (Si-O) confidence 0.9
“Broadband between 1099 and 1250 cm-1 assigned to asymmetric vibration of O-Si-O and Si-O-Si.”
Arevalo-Cid 等 - 2018 - Comparative study of core-shell nanostructures bas DOI: 10.1016/j.jallcom.2018.06.246 -
Siloxane (Si-O-Si) confidence 0.9
“Text: 'Si-O-Si 1099 ... ascribed to asymmetric stretching'”
Fei 等 - 2019 - Synthesis and characterization of a novel rutheniu DOI: 10.1039/c9ra05079e -
confidence 0.9
“Explicit assignment: 'absorption band at 1099 which was assignable to the stretching'”
Fortuna 等 - 2022 - Effects of Hybrid Polymeric Material Based on Poly DOI: 10.3390/ma15144868 -
Sulfate (SO4) confidence 0.85
“Text states 'The peak appeared at 1099 may be attributed to the SO4^2-'”
Parida 等 - 2004 - Studies on manganese-nodule leached residues - 1. DOI: 10.1016/j.jcis.2004.04.057 -
confidence 0.8
“Bands around 1128 and 1099 attributed to aliphatic groups -CH2 and -CH3 from Ti(OBu)4.”
Benavides-Guerrero 等 - 2022 - Synthesis of vacancy-rich titania particles suitab DOI: 10.1038/s41598-022-19824-y
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