What absorbs at 1513 cm⁻¹ in an FTIR spectrum?
A band near 1513 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 |
|---|---|---|---|
| Aromatic ring | 3 | 3 | 1.0 |
| Carbonyl (C=O) | 2 | 2 | 0.9 |
| Alkyl C-H | 1 | 1 | 1.0 |
| Amide | 1 | 1 | 0.7 |
Ranking reflects accumulated literature evidence, not a single authoritative rule. Always confirm against your sample context.
Literature behind these assignments
-
Alkyl C-H confidence 1.0
“Explicit assignment in text.”
Liu 等 - 2020 - Use of Sulfur-Free Lignin as a novel soil additive DOI: 10.1016/j.enggeo.2020.105551 -
Aromatic ring confidence 1.0
“Explicit assignment in text: '1,513cm-1 stretching vibration of aromatic ring'”
Zhang 等 - 2021 - Immobilization of Glycogen Synthase Kinase-3 beta DOI: 10.3389/fbioe.2021.806151 -
Aromatic ring confidence 0.9
“explicit assignment”
Watanabe 等 - 2013 - Effect of high CO2 concentration on char formation DOI: 10.1016/j.proci.2012.07.048 -
Carbonyl (C=O) confidence 0.9
“Explicit assignment from text.”
Reddy 等 - 2021 - Curcumin encapsulated dual cross linked sodium alg DOI: 10.1016/j.jpha.2020.07.002 -
confidence 0.9
“marker for lignin”
Sandu 等 - 2023 - Authentication of a Stradivarius Petite Violin T DOI: 10.3390/app -
Carbonyl (C=O) confidence 0.9
“C=O at 1513 cm-1”
Wu 等 - 2020 - Study on the Properties of Transparent Bamboo Prep DOI: 10.3390/polym12040863 -
Amide confidence 0.7
“Listed as both amide and C-C aromatic stretching.”
Aamir 和 Ahmad - 2010 - Production and Stability Evaluation of Modified-Re DOI: 10.1208/s12249-010-9392-1
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