What absorbs at 1150 cm⁻¹ in an FTIR spectrum?
A band near 1150 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 | 12 | 11 | 1.0 |
| Aldehyde (CHO) | 3 | 3 | 0.9 |
| Carbohydrate | 3 | 3 | 0.8 |
| Fluorine (C-F) | 3 | 2 | 0.9 |
| C c single bond | 3 | 2 | 0.9 |
| Siloxane (Si-O-Si) | 2 | 1 | 0.9 |
| Hydroxyl (O-H) | 2 | 1 | 0.8 |
| Lignin | 1 | 1 | 1.0 |
| Methyl | 1 | 1 | 0.9 |
| Carbonyl (C=O) | 1 | 1 | 0.8 |
| Ester | 1 | 1 | 0.8 |
| Ring structure | 1 | 1 | 0.8 |
| Phosphate (PO4) | 1 | 1 | 0.7 |
| Silicon nitrogen | 1 | 1 | 0.6 |
| Silicon-oxygen (Si-O) | 1 | 1 | 0.6 |
Ranking reflects accumulated literature evidence, not a single authoritative rule. Always confirm against your sample context.
Literature behind these assignments
-
confidence 1.0
“Characteristic peak of valdecoxib”
Thakral 等 - 2010 - Eudragit S-100 entrapped chitosan microspheres of DOI: 10.1007/s10856-010-4109-2 -
confidence 1.0
“Due to quinonoid unit of doped PANI.”
Abdolahi 等 - 2012 - Synthesis of Uniform Polyaniline Nanofibers throug DOI: 10.3390/ma5081487 -
C-O single bond confidence 1.0
“Explicit assignment in text”
Gregorio 等 - 2017 - Analysis of human bodily fluids on superabsorbent DOI: 10.1016/j.talanta.2016.10.061 -
confidence 1.0
“Text: 'lower Raman peaks at 882 and 1150 correspond to HPO4-3'”
Yildizbakan 等 - 2022 - Fabrication and Characterisation of Two-Layered Sy DOI: 10.1007/978-3-030-92381-5_73 -
Lignin confidence 1.0
“Text: 'guaiacyl at ... 1150'”
Zhang 和 Zhou - 2022 - Industrial lignins the potential for efficient re DOI: 10.21203/rs.3.rs-453856/v1 -
Siloxane (Si-O-Si) confidence 0.9
“Explicitly assigned to Si-O-Si bond.”
Fuad 等 - 2018 - Nanostructural Characters of beta-SiC Nanoparticle DOI: 10.1088/1742-6596/1011/1/012066 -
Aldehyde (CHO) confidence 0.9
“Explicit assignment in text.”
Yu - 2011 - Microprobing the molecular spatial distribution an DOI: 10.1107/S0909049511023727 -
Aldehyde (CHO) confidence 0.9
“Explicit assignment in text.”
Yu 等 - 2004 - Imaging molecular chemistry of pioneer corn DOI: 10.1021/jf049291b
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