What absorbs at 1104 cm⁻¹ in an FTIR spectrum?
A band near 1104 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 8 cited sources
Possible functional-group assignments
| Functional group | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| C-O single bond | 2 | 2 | 0.9 |
| Carbonyl (C=O) | 2 | 2 | 0.7 |
| Siloxane (Si-O-Si) | 1 | 1 | 0.9 |
| Carbohydrate | 1 | 1 | 0.9 |
| Silicon-oxygen (Si-O) | 1 | 1 | 0.9 |
| Nitrogen heterocycle | 1 | 1 | 0.8 |
| Sulfate (SO4) | 1 | 0 | 0.8 |
Ranking reflects accumulated literature evidence, not a single authoritative rule. Always confirm against your sample context.
Literature behind these assignments
-
confidence 1.0
“Explicit assignment in text.”
Ibrahim 等 - 2018 - Synthesis of Metal-Organic Framework from Iron Nit DOI: 10.1166/jnn.2018.15373 -
confidence 0.9
“Assigned to stretching vibration of benzyl hydroxyl C-O.”
Cui 等 - 2016 - Fabrication of Glass Fiber Reinforced Composites B DOI: 10.3390/ma9110886 -
C-O single bond confidence 0.9
“Bending vibration of C-O.”
Esmaeili 等 - 2020 - Graphene oxide and its derivatives as promising In DOI: 10.1038/s41598-020-75090-w -
Silicon-oxygen (Si-O) confidence 0.9
“Text: 'asymmetrical vibration of silica' associated with 1104 cm-1.”
Procaccini 等 - 2011 - Development and thermal evolution of silver cluste DOI: 10.1016/j.surfcoat.2011.06.018 -
Carbohydrate confidence 0.9
“Text: 'bands attributed to cellulose at ... 1104 cm-1'”
Spear 和 Broda - 2020 - Comparison of Contemporary Elm (Ulmus spp.) and De DOI: 10.3390/ma13215026 -
Siloxane (Si-O-Si) confidence 0.9
“Text: '1104 cm-1 ... for Si-O-Si groups (stretching and bending vibrations)'”
Zdarta 等 - 2017 - Lipase B from Candida antarctica Immobilized on a DOI: 10.3390/catal7010014 -
Nitrogen heterocycle confidence 0.8
“in-plane C-H bending of imidazolium ring”
Verma 等 - 2012 - Effect of Ultrasonic Irradiation on Preparation an DOI: 10.1155/2012/570719 -
confidence 0.7
“Assigned to ZnS vibration bands.”
Jaffres 等 - 2017 - Morphological control of ZnS nanopowders by differ DOI: 10.1016/j.matlet.2017.08.102
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