What absorbs at 2369 cm⁻¹ in an FTIR spectrum?
A band near 2369 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 6 cited sources
Ateb cyflym
A band near 2369 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 |
|---|---|---|---|
| Hydroxyl (O-H) | 2 | 2 | 1.0 |
| Alkyl C-H | 1 | 1 | 1.0 |
| Carbon dioxide | 1 | 1 | 1.0 |
| Protein | 1 | 1 | 1.0 |
| N h | 1 | 1 | 0.8 |
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 |
|---|---|---|---|
| polypyrrole | 2369, 1700, 400 | Alkyl C-H | 1 |
| AgNPs | 2369, 1232, 1048 | Alkyl C-H, Hydroxyl (O-H) | 1 |
| gold nanoparticles | 2369, 1638, 3252 | Alkyl C-H, Hydroxyl (O-H) | 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 2369 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
-
Protein hyder 1.0
“The new bands at 2369 and 1519 appeared in FTIR clearly showed structural changes of wool 2θ=33o 47o proteins.”
Gashti 等 - 2015 - Electromagnetic Shielding Response of UV-induced P DOI: 10.1007/s12221-015-0585-9 -
hyder 1.0
“Hence peaks at 2345 in both RHBC and CSBC cm(cid:5)1 50.54(cid:1) -C^Cwhile the peak at are tentatively assigned to and the peak at 2369 in CSBC is due to Ca(OH) (JCPDS card in 2 44.67(cid:1) 78.69(cid:1)”
Biochar production and applications in soil fertility and carbon sequestration – a sustainable solution to crop-residue burning in India DOI: 10.1039/c7ra10353k -
Hydroxyl (O-H) hyder 1.0
“cm-1 The band observed at 2341.58 (curve-1) and 2368.94 cm-1 (curve-2), which are very nearer band, denotes the Evaluation of Ag-Extract NPs by SEM and TEM presence of hydrogen bonded OH stretching of carboxylic The SEM and TEM analyses sho”
Anthelmintic activity of silver-extract nanoparticles synthesized from the combination of silver nanoparticles and M. charantia fruit extract DOI: 10.1186/s12906-016-1219-5 -
Carbon dioxide hyder 1.0
“evolved at 477 and 491 The peak at about 2369 which (cid:2)C was evidenced at 400 indicates the appearance of CO 2.”
Serbezeanu 等 - 2016 - Phosphorus-containing polyimide fibers and their t DOI: 10.1039/c6ra06497c -
Alkyl C-H hyder 1.0
“The cm-1 are associated with C-H stretching and the band at 2369 refers to the CO from 2 band at 896 cm-1 is linked to the axial strains of C-O-C bonds and β-glycosidic bonds cm-1 the atmosphere of the analysis.”
Influence of Silanization Treatment of Sponge Gourd (Luffa cylindrica) Fibers on the Reinforcement of Polyester Composites: A Brief Report DOI: 10.3390/polym14163311 -
N h hyder 0.8
“Explicit assignment: 'An interesting peak observed at 2369 in the NH- spectrum'”
Rajam 等 - 2017 - Monodispersed Gold Nanoparticles as a Probe for th DOI: 10.17344/acsi.2016.3054
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.