What absorbs at 2323 cm⁻¹ in an FTIR spectrum?
A band near 2323 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 2323 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 |
|---|---|---|---|
| Carbon dioxide | 2 | 2 | 1.0 |
| Water (H2O) | 2 | 2 | 1.0 |
| Methacrylate | 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 |
| Acetate | 1 | 1 | 1.0 |
| Alkene (C=C) | 1 | 1 | 0.9 |
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 |
|---|---|---|---|
| CuO | 2323, 453, 1000 | Methacrylate | 1 |
| rGO | 2323, 2358, 2930 | 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 2323 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
-
Water (H2O) hyder 1.0
“BR exhibits three water bands at 2323, 2500 in the Batho-minus-rhodopsin difference spectrum”
Ota 等 - 2006 - Structural changes in the Schiff base region of sq DOI: 10.1021/bi051937l -
Carbon dioxide hyder 1.0
“The corre2323 and 2345 (O=C=O stretching) and cm-1 spondingbandareasandtheirassignmentsaredetailed 3400 (-OH vibrational stretch) corresponding b-glucan in Table 1.”
Pemmaraju 等 - 2016 - Modulation of Candida albicans Biofilm by Differen DOI: 10.1007/s11046-016-9992-8) -
Water (H2O) hyder 1.0
“This is also the case for strongly hydrogen-bonded (-), SrSRI SrSRI the minus spectrum, the bands at 3492 K cm-1 water molecules in BR (2323, 2292, and 2171 bands (-), (+)”
Suzuki 等 - 2008 - Structural Changes of Salinibacter Sensory Rhodops DOI: 10.1021/bi801358b -
Carbon dioxide hyder 1.0
“The band at 2323 shows the existence of CO 2.”
Abozaid 等 - 2018 - Characterization of Neodymium Doped Calcium Tungst DOI: 10.2298/SOS1804445A -
hyder 1.0
“2368.44cm-1 2323.25cm-1 that appeared at and indicate the made a significant alteration due to aggregation of GV presence of nitrogen linkage, which is present in the molecules on the surface of sorbent, which might reduce the structure of”
Akram 等 - 2021 - Kinetic and Isothermal Investigations of Cost-Effe DOI: 10.1155/2021/5549536 -
Alkene (C=C) hyder 0.9
“Explicit assignment: 'vibrations at wavenumbers 2323 ... indicating the presence of C=C'.”
High Selectivity Fuel from Efficient CO2 Conversion by Zn-Modified rGO and Amine-Functionalized CuO as a Photocatalyst DOI: 10.3390/ma16124314
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.