What absorbs at 821 cm⁻¹ in an FTIR spectrum?
A band near 821 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 5 cited sources
可能性のある官能基アサイン
| 官能基 | 裏付け事実 | 引用元 | 最高信頼度 |
|---|---|---|---|
| Carbohydrate | 1 | 1 | 1.0 |
| Hydroxyl (O-H) | 1 | 1 | 1.0 |
| C-O single bond | 1 | 1 | 1.0 |
| Alkyl C-H | 1 | 1 | 1.0 |
| Aromatic ring | 1 | 1 | 1.0 |
| Alkene (C=C) | 1 | 0 | 1.0 |
ランキングは蓄積された文献証拠を反映しており、単一の権威あるルールではありません。常にサンプルのコンテキストと照合して確認してください。
これらのアサインの根拠となる文献
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Aromatic ring 信頼度 1.0
“The band at 821 shows aromatic compounds [16].”
Enhanced Pharmaceutically Active Compounds Productivity from Streptomyces SUK 25: Optimization, Characterization, Mechanism and Techno-Economic Analysis DOI: 10.3390/molecules26092510 -
Alkyl C-H 信頼度 1.0
“C-H rocking of PVA is attributed to the band at 821 [34].”
Innovative Green Chemistry Approach to Synthesis of Sn2+-Metal Complex and Design of Polymer Composites with Small Optical Band Gaps DOI: 10.3390/molecules27061965 -
C-O single bond 信頼度 1.0
“The present peak at 1025 indicates the asymmetric stretching of the C-O-C The peak cm-1 cm-1 821 was due to the bending vibration of C=C and the peak 604 pertained to the stretching vibration of Ni-O, Fe-O, and Co-O in the tetrahedral or oc”
Production of Ni0.5Co0.5Fe2O4/activated carbon@chitosan magnetic nanobiocomposite as a novel adsorbent of methylene blue in aqueous solutions DOI: 10.1038/s41598-023-33470-y -
Hydroxyl (O-H) 信頼度 1.0
“In particular, the peak at 2970 is assigned to C-H cm(cid:0) cm(cid:0) 1, 1 generally attributed to the intermolecular O-H are associated with aroand the peaks appearing at 821 and 721 peak at 3450”
Binational survey of personal protective equipment (PPE) pollution driven by the COVID-19 pandemic in coastal environments: Abundance, distribution, and analytical characterization DOI: 10.1016/j.jhazmat.2021.128070 -
Carbohydrate 信頼度 1.0
“Induction of N type Phosphate asymmetric and symmetric stretching bands sugar conformation is evident by increase in the intensity of bands cm21 cm21 (1224 and 1086 respectively) and sugar stretching cm21 cm1 and 821 in the complexes (Figur”
Jangir 等 - 2013 - Role of Minor Groove Width and Hydration Pattern o DOI: 10.1371/journal.pone.0069933
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