What absorbs at 1275 cm⁻¹ in an FTIR spectrum?
A band near 1275 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
Galimi funkcinių grupių priskyrimai
| Funkcinė grupė | Pagrindžiantys faktai | Cituoti šaltiniai | Aukščiausias pasitikėjimas |
|---|---|---|---|
| Methacrylate | 9 | 9 | 1,0 |
| Acetate | 9 | 9 | 1,0 |
| Methoxy (OCH3) | 7 | 7 | 1,0 |
| C-O single bond | 6 | 6 | 1,0 |
| Alkyl C-H | 5 | 5 | 1,0 |
| Carboxyl (COOH) | 4 | 4 | 1,0 |
| Hydroxyl (O-H) | 4 | 4 | 1,0 |
| Amide | 3 | 3 | 1,0 |
| Ester | 3 | 3 | 1,0 |
| Ketone | 2 | 2 | 1,0 |
| Carbonyl (C=O) | 2 | 2 | 1,0 |
| Silicon carbon | 2 | 2 | 1,0 |
| Aromatic ring | 1 | 1 | 1,0 |
| N h | 1 | 1 | 1,0 |
| Secondary amine | 1 | 1 | 1,0 |
| C n single bond | 1 | 1 | 1,0 |
| Methyl | 1 | 1 | 1,0 |
| C c single bond | 1 | 1 | 1,0 |
| Ring structure | 1 | 0 | 0,8 |
Reitingavimas atspindi sukauptą literatūros įrodymų kiekį, o ne vieną autoritetingą taisyklę. Visada patvirtinkite pagal savo mėginio kontekstą.
Literatūra, kuria remiantis atlikti šie priskyrimai
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Hydroxyl (O-H) pasitikėjimas 1,0
“1275cm-1 Changes in functional groups (chemical structure) were studied via the band generally assigned to phenols.”
Fossil cutin of Johnstonia coriacea (Corystospermaceae, Upper Triassic, Cacheuta, Argentina) DOI: 10.1016/j.coal.2018.02.016 -
Alkyl C-H pasitikėjimas 1,0
“3 cm(cid:1)1 VSE is observed for the 2997, 2952, and 2919 bands assigned cm(cid:1)1 to the CH stretching modes, the 1275 and 1245 bands C(cid:1)(cid:1)O assigned to the stretching modes, and the 1194 and cm(cid:1)1 C(cid:1)(cid:1)C 1151 ban”
Vibrational Stark effect (VSE) on the infrared spectrum of a poly(methyl methacrylate) thin film DOI: 10.1016/j.vibspec.2015.03.006 -
Silicon carbon pasitikėjimas 1,0
“Among the CVD ashed films, the lower roughness 3 (cid:1)2968 cm-1(cid:2) (cid:1)1275 cm-1(cid:2) stretching and Si-CH bending modes, a value in the case of the O 2-plasma-exposed film may be attributed to”
Vinogradova 等 - 2008 - Application of deuterium exchange to analyze moist DOI: 10.1149/1.2947786(cid:2) -
Hydroxyl (O-H) pasitikėjimas 1,0
“cm-1 The small peak at 1450 was assigned to C-OH bending deformation, and the peak at 1275 The small peak at 1450 cm-1 was assigned to C-OH bending deformation, and the peak at 1275”
Application of Functional Data Analysis and FTIR-ATR Spectroscopy to Discriminate Wine Spirits Ageing Technologies DOI: 10.3390/math8060896 -
Hydroxyl (O-H) pasitikėjimas 1,0
“(cid:2) FC stretch 1293sh 1282 (0.20) CO phenolic stretch 1275 1277 (0.99)”
Hydrogen Bonding in Human Manganese Superoxide Dismutase Containing 3-Fluorotyrosine DOI: 10.1529/biophysj.105.060616 -
Acetate pasitikėjimas 1,0
“CH wagging of cellulose and hemicelluloses 1335 - 1315 2 Characteristic peak of lignin 1275 C-O of acetyl in pectin or hemicelluloses 1240 anti-symmetrical deformation of the C-O-C band 1160 C-O stretching and ring vibrational modes 1125-89”
Qualitative and quantitative assessment of water sorption in natural fibres using ATR-FTIR spectroscopy DOI: 10.1016/j.carbpol.2013.09.023 -
Acetate pasitikėjimas 1,0
“cm-1, 30 between 3000-2860 the aromatic C-H stretch at 3060 the carboxyl (C=O) stretch at cm-1, cm-1, 31 1700 aromatic ring stretching modes at 1590 and 1515 the C-O-(C) stretch at 1275 cm-1 cm-1.”
Cibati 等 - 2017 - Assessment of Miscanthus x giganteus derived bioch DOI: 10.1016/j.jclepro.2017.06.114 -
Acetate pasitikėjimas 1,0
“The FTIR spectrum has presented broad 1750cm-1 1275cm-1 3650cm-1 and 1200 to ranging from 1710 to bands in the frequency ranging from 3100 to (νC=O) arise due to the stretching vibration of carbonyl attributed to both contributions of hydro”
Costa 等 - 2012 - Engineered Hybrid Scaffolds of Poly(vinyl alcohol) DOI: 10.1155/2012/718470
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