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
가능한 작용기 할당
| 작용기 | 지원 사실 | 인용 출처 | 최고 신뢰도 |
|---|---|---|---|
| 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 |
순위는 단일 권위 규칙이 아닌 축적된 문헌 증거를 반영합니다. 항상 샘플 상황에 대해 확인하세요.
이 할당의 배경이 되는 문헌
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Aromatic ring 신뢰도 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 신뢰도 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 신뢰도 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) 신뢰도 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 신뢰도 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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