What absorbs at 821 cm⁻¹ in an FTIR spectrum?
Ивица близо до 821 cm⁻¹ може да сочи към няколко функционални групи. По-долу са най-вероятните присвоявания, подредени по количеството публикувани доказателства, които ги подкрепят — всяко едно проследимо до литература (DOI) и кръстосано валидирано спрямо нашите 130 000+ референтни спектъра и графика на знанията.
Backed by 5 cited sources
Възможни определяния на функционални групи
| Функционална група | Подкрепящи факти | Цитирани източници | Най-висока достоверност |
|---|---|---|---|
| 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 |
Класирането отразява натрупаните литературни доказателства, а не единично авторитетно правило. Винаги потвърждавайте спрямо контекста на вашата проба.
Литература зад тези определяния
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Aromatic ring достоверност 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 достоверност 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 достоверност 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) достоверност 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 достоверност 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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