What absorbs at 1213 cm⁻¹ in an FTIR spectrum?
A band near 1213 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 1213 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 |
|---|---|---|---|
| Methoxy (OCH3) | 3 | 3 | 1.0 |
| Methacrylate | 3 | 3 | 1.0 |
| C-O single bond | 3 | 3 | 1.0 |
| Acetate | 3 | 3 | 1.0 |
| Alkyl C-H | 2 | 2 | 1.0 |
| Carbohydrate | 1 | 1 | 1.0 |
| Secondary amine | 1 | 1 | 1.0 |
| C n single bond | 1 | 1 | 1.0 |
| Amide | 1 | 1 | 1.0 |
| Siloxane (Si-O-Si) | 1 | 1 | 1.0 |
| Silicon-oxygen (Si-O) | 1 | 1 | 1.0 |
| Silicon (Si) | 1 | 1 | 1.0 |
| Protein | 1 | 1 | 0.7 |
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 |
|---|---|---|---|
| polyurethane | 1213, 2270, 1700 | Methacrylate, Acetate, C-O single bond | 1 |
| polyester | 1213, 1700, 1250 | Methacrylate, Acetate, Methoxy (OCH3) | 1 |
| TiO2 | 1213, 1700, 1093 | Methacrylate, Acetate, C-O single bond | 1 |
| soil | 1213, 575, 1240 | Methacrylate, Acetate, Methoxy (OCH3) | 1 |
| polyaniline | 1213, 1565, 1570 | Methacrylate, Acetate | 1 |
| TiO2 nanoparticles | 1213, 1700, 455 | Methacrylate, C-O single bond, Acetate | 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 1213 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
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Alkyl C-H hyder 1.0
“cm-1 and 1635 due to stretching vibrations of O-H group, the bands assigned at 3275 cmcm-1, - 1 the band at 2922 due to vibrations of C H stretching thee band at 1213 1062cm-1,482cm-1,576cm-1,1535cm-1arethefollowingvibrationsC-Ostretching,N”
Bio-engineered TiO2 nanoparticles using Ledebouria revoluta extract: Larvicidal, histopathological, antibacterial and anticancer activity DOI: 10.1080/03067319.2020.1718668 -
Silicon (Si) hyder 1.0
“While the absorption bands at wave numbers 1060.88 and 1213.27 cm-1 show the Si-O-Si asymmetrical vibrations.”
Synthesis and catalytic activity of mesoporous Al-MCM-41/UiO-66 for esterification of oleic acid DOI: 10.1063/1.5082500 -
Acetate hyder 1.0
“attached to the aromatic graphene network at 1409 the C-O (hydroxyl) stretching at 1601 cm-1 cm-1 the C-O (epoxy) stretching at 1040 and the C-O (phenolic) stretching at 1213 [18,30].”
Preparation of Electrospun Nanocomposite Nanofibers of Polyaniline/Poly(methyl methacrylate) with Amino-Functionalized Graphene DOI: 10.3390/polym9090453 -
Alkyl C-H hyder 1.0
“2 the dyslipidemic effect was dependent on the concentration L cm-1 ibrary and the CH asymmetric stretching band at 1213 2 of the statin used.”
Comparison of the Effects of Statins on A549 Nonsmall‐Cell Lung Cancer Cell Line Lipids Using Fourier Transform Infrared Spectroscopy: Rosuvastatin Stands Out DOI: 10.1002/lipd.12296 -
Acetate hyder 1.0
“Polymers 2023, 15, x FOR PEER REVIEW 12 of 15 1583 Aromaticringsvibration 1213 C-O/C-O-Cstretchingvibration”
Enhancing Char Formation and Flame Retardancy of Ethylene-Vinyl Acetate Copolymer (EVA)/Aluminum Hydroxide (ATH) Composites by Grafting Ladder Phenyl/Vinyl Polysilsesquioxane (PhVPOSS) DOI: 10.3390/polym15153312 -
Amide hyder 1.0
“1213 (stretching modes of C-N bonds);”
ATR-FTIR Analysis of Orthodontic Invisalign® Aligners Subjected to Various In Vitro Aging Treatments DOI: 10.3390/ma14040818 -
Carbohydrate hyder 1.0
“The peak at 1213 signifies hemicellulose vibration.”
Shafiquzzaman 等 - 2022 - Sawdust Recycling in the Development of Permeable DOI: 10.3390/su141811115 -
Acetate hyder 1.0
“A band at 1213 cm-1 belonged to the syringyl ring and C-O stretch in In the FTIR spectra of all samples studied, there are characteristic absorption bands of the aliphatic C-H bond at 2940 cm-1 and (less pronounced) at 2840 cm-1.”
Formation of Humic-Like Substances during the Technological Process of Lignohumate® Synthesis as a Function of Time DOI: 10.3390/separations8070096
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.