What absorbs at 1030 cm⁻¹ in an FTIR spectrum?
A band near 1030 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 | 16 | 13 | 1.0 |
| Phosphate (PO4) | 7 | 7 | 1.0 |
| S eq o | 7 | 7 | 1.0 |
| Carbohydrate | 7 | 5 | 0.95 |
| Siloxane (Si-O-Si) | 5 | 5 | 0.9 |
| Silicon-oxygen (Si-O) | 4 | 2 | 0.9 |
| Hydroxyl (O-H) | 3 | 3 | 0.95 |
| C c single bond | 2 | 2 | 0.9 |
| Alkene (C=C) | 1 | 1 | 0.9 |
| Lignin | 1 | 1 | 0.9 |
| Silicon fluorine | 1 | 1 | 0.9 |
| Carbonyl (C=O) | 1 | 1 | 0.8 |
| C n single bond | 1 | 1 | 0.8 |
| Carbonate | 1 | 1 | 0.7 |
| N h | 1 | 0 | 0.9 |
| Alkyl C-H | 1 | 0 | 0.9 |
| Anhydride | 1 | 0 | 0.9 |
Ranking reflects accumulated literature evidence, not a single authoritative rule. Always confirm against your sample context.
Literature behind these assignments
-
S eq o confidence 1.0
“Explicit assignment: 'sulfoxide peak at 1030'”
Chen 等 - 2022 - Effect of Re-Recycling on Rheology and Microstruct DOI: 10.3390/ma15196641 -
Phosphate (PO4) confidence 1.0
“P-O-C linkage evidenced by peak at 1030.”
Pourchet 等 - 2019 - New Reactive Isoeugenol Based Phosphate Flame Reta DOI: 10.1021/acssuschemeng.9b02629 -
S eq o confidence 0.95
“Explicit assignment in text: 'sulfoxides (1030cm-1)'”
Ma 等 - 2023 - Chemical characterisation of bitumen type and agei DOI: 10.1080/14680629.2023.2181008 -
Phosphate (PO4) confidence 0.95
“Explicit assignment: 'ν3 PO43- group vibrations at 1030 and 1097 cm-1'”
Mosina 等 - 2023 - Gallium-Doped Hydroxyapatite Shows Antibacterial A DOI: 10.3390/jfb14020051 -
C-O single bond confidence 0.95
“Explicit assignment: C-O stretching and O-H deformation, attributed primarily to polysaccharides.”
Shahariar 等 - 2022 - Impact of short-rotation willow as riparian land-u DOI: 10.21203/rs.3.rs-568432/v1 -
Carbohydrate confidence 0.9
“Glucose-specific peak”
Eikje - 2011 - In vivo interstitial glucose characterization and DOI: 10.1117/12.874735 -
C-O single bond confidence 0.9
“Recognized as stretch of ether.”
Hanif 和 Zaman - 2017 - Thiolation of arabinoxylan and its application in DOI: 10.1186/s40199-017-0172-2 -
Hydroxyl (O-H) confidence 0.9
“Text states 'O-H absorption bands at ... 1030'.”
Khanra 等 - 2014 - 7,7,8,8-Tetracyanoquinodimethane-assisted one-step DOI: 10.1039/c3nr05307e
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