What absorbs at 2862 cm⁻¹ in an FTIR spectrum?
A band near 2862 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
Ateb cyflym
A band near 2862 cm⁻¹ is usually interpreted by checking which functional groups repeatedly co-occur there in the literature, then confirming at least one or two additional peaks in the same sample. This page ranks those assignments by accumulated evidence rather than by a single fixed textbook rule.
Aseiniadau grŵp swyddogaethol posibl
| Grŵp swyddogaethol | Ffeithiau ategol | Ffynonellau a ddyfynnwyd | Hyder uchaf |
|---|---|---|---|
| Alkyl C-H | 10 | 10 | 1.0 |
| Hydroxyl (O-H) | 2 | 2 | 1.0 |
| Methacrylate | 2 | 2 | 1.0 |
| Acetate | 2 | 2 | 1.0 |
| Ring structure | 1 | 1 | 1.0 |
| Carbohydrate | 1 | 1 | 1.0 |
| Ketone | 1 | 1 | 1.0 |
| Ester | 1 | 1 | 1.0 |
| Carboxyl (COOH) | 1 | 1 | 1.0 |
| Carbonyl (C=O) | 1 | 1 | 1.0 |
| Amide | 1 | 1 | 1.0 |
| Metal oxygen | 1 | 1 | 1.0 |
| Methoxy (OCH3) | 1 | 1 | 1.0 |
| Methyl | 1 | 1 | 1.0 |
Mae＇r safle＇n adlewyrchu tystiolaeth llenyddiaeth gronnwyd, nid rheol awdurdodol sengl. Cadarnhewch bob amser yn erbyn eich cyd-destun sampl.
Deunyddiau posibl
| Deunydd | Copaon ategol | Grwpiau sy＇n gorgyffwrdd | Ffynonellau a ddyfynnwyd |
|---|---|---|---|
| chitosan | 2862, 1650, 1655 | Alkyl C-H, Acetate, Methacrylate | 1 |
Mae deunyddiau＇n cael eu dangos dim ond pan fydd yr un gronfa lenyddiaeth yn cefnogi＇r band hwn ac o leiaf un brig nodweddiadol ychwanegol.
Rhesymeg sbectrwm
This band becomes meaningful only when read with its neighboring peaks. In practice, analysts first look at the assignments above, then check whether the same sample also shows other peaks expected for the same structural motif. A lone band near 2862 cm⁻¹ is usually not enough for material identification by itself.
Defnydd yn y byd go iawn
Mae＇r math hwn o ymholiad yn gyffredin mewn adnabod polymer, sgrinio plastig anhysbys, datrys problemau QC, dilysu deunydd wedi＇i ailgylchu, ac adolygiad o aseiniad copa wedi＇i gefnogi gan lenyddiaeth.
Camgymeriadau cyffredin
- Trin un band ynysig fel prawf o ddeunydd heb wirio o leiaf un neu ddau gopa cefnogol.
- Anwybyddu gorgyffwrdd: gall grwpiau swyddogaethol lluosog gyfrannu ger yr un rhif ton.
- Hepgor dilysu pan fo ychwanegion, cymysgeddau, ocsideiddio, neu halogiad yn gallu ystumio＇r sbectrwm.
Cyngor dilysu
Pan fo amwysedd yn parhau, dilyswch y rhagdybiaeth gyda DSC, GC-MS, neu TGA, yn enwedig ar gyfer cymysgeddau, samplau dirywiedig, a pholymerau llawn.
Llenyddiaeth y tu ôl i＇r aseiniadau hyn
-
Alkyl C-H hyder 1.0
“LLM confirmed rule peak-group candidate”
Synthesis, Characterization, Drug Delivery, and Splinting Activity of Folic Acid Bridged Poly(E-caprolactone-co-tetrahydrofuran) DOI: 10.1080/00914037.2014.996711 -
Alkyl C-H hyder 1.0
“MCM-PS-TDI-C4S , which correspond to the phenyl and MCM-PS-TDI-C4 -CH2-., respectively, and methyl (CH3) methylene bridges 20 asymmetric stretching and symmetric vibrations at 2969 and 2862cm-1”
Alahmadi 等 - 2013 - Preparation of Organic-Inorganic Hybrid Materials DOI: 10.1155/2013/634863 -
Alkyl C-H hyder 1.0
“- - - 2851-2860 CH methylene symmetric stretching 2859 2862 2859 C]O - 1632-1660 stretching amide I 1633 1633 1633 1633 1631 3.0 C-N”
Facile synthesis of novel calcium silicate hydrated-nylon 6/66 nanocomposites by solution mixing method DOI: 10.1039/c8ra07116k -
Hydroxyl (O-H) hyder 1.0
“Magnesium oxide and hydroxide are evicm-1 cm-1 2862 [29,30,32,33], 2839 and 2311 (Mg-O) [29,30,32,33], and 1447, 1026, 896, and denced by the bands at 3674 cm-1 (OH stretching in Mg-OH or Mg-O) [29,30,32,33], 2862 cm-1, 561 which are also i”
Saharan Dust Storm Aerosol Characterization of the Event (9 to 13 May 2020) over European AERONET Sites DOI: 10.3390/atmos13030493 -
Alkyl C-H hyder 1.0
“In addition, these bands were 2926 cm-1 (asymmetrical C-H stretching vibration), 2862 cm-1 (CH2 stretching vibration), slightly shifted compared to glycerol, and their intensity decreased significantly.”
Morphology and Selected Properties of Modified Potato Thermoplastic Starch DOI: 10.3390/polym15071762 -
Acetate hyder 1.0
“The The spectrum revealed that the polymers had five major common peaks: -NH stretching vibration peak spectrum revealed that the polymers had five major common peaks: -NH stretching vibration peak cm-1), cm-1), cm-1), (3333 CH stretching v”
Synthesis and Properties of Novel Polyurethanes Containing Long-Segment Fluorinated Chain Extenders DOI: 10.3390/polym10111292 -
Alkyl C-H hyder 1.0
“The absorption band at 2862 cm-1 was ascribed to the C-H stretching cm-1 The spectrum of pure NaCMC shows a broad spectrum at 3345 due to the presence of -OH”
Chitosan–Carboxymethylcellulose-Based Polyelectrolyte Complexation and Microcapsule Shell Formulation DOI: 10.3390/ijms19092521 -
Alkyl C-H hyder 0.9
“Explicit assignment: absorption peak at 2862 due to C-H stretching vibration.”
Synthesis and Characterization of Tea Polyphenol–Coated Magnetite Nanoparticles for Hyperthermia Application DOI: 10.1007/s10948-019-05189-3
Oes gennych sbectrwm gyda＇r band hwn?
Llwythwch eich sbectrwm FTIR i fyny a chael adroddiad dehongli llawn — aseiniadau brig gyda chyfeiriadau llenyddiaeth, cyfateb llyfrgell, a chadwyn dystiolaeth â gradd hyder — mewn eiliadau.