What absorbs at 2354 cm⁻¹ in an FTIR spectrum?
A band near 2354 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 5 cited sources
Stutt svar
A band near 2354 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.
Mögulegar úthlutun virkra hópa
| Virkur hópur | Stuðningsstaðreyndir | Tilvitnuð heimildir | Mesta öryggi |
|---|---|---|---|
| Alkyl C-H | 1 | 1 | 1,0 |
| Water (H2O) | 1 | 1 | 1,0 |
| Hydroxyl (O-H) | 1 | 1 | 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 |
Röðun endurspeglar uppsöfnuð ritrýnisgögn, ekki eina valdboðsreglu. Staðfestu alltaf í samhengi við sýnið þitt.
Möguleg efni
| Efni | Stuðningstindar | Skarast hópar | Tilvitnuð heimildir |
|---|---|---|---|
| chitosan | 2354, 1650, 1655 | Alkyl C-H, Methacrylate, Hydroxyl (O-H) | 1 |
| Cellulose | 2354, 1735, 1650 | Alkyl C-H, Methacrylate, Hydroxyl (O-H) | 1 |
| TiO2 | 2354, 1700, 1093 | Hydroxyl (O-H), Alkyl C-H, Methacrylate | 1 |
| silver nanoparticles | 2354, 1636, 1631 | Hydroxyl (O-H), Alkyl C-H, Methacrylate | 1 |
Efni birtast aðeins þegar sama bókmenntasafn styður þessa band og að minnsta kosti einn viðbótar einkennandi hámark.
Rófrök
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 2354 cm⁻¹ is usually not enough for material identification by itself.
Raunveruleg notkun
Þessi tegund fyrirspurna er algeng við auðkenningu fjölliða, skimun óþekktra plasttegunda, bilanaleit í gæðaeftirliti, staðfestingu endurunnins efnis og bókmenntabakkaða endurskoðun á hápunktum.
Algeng mistök
- Meðhöndla eina einangraða öldulengd sem sönnun á efni án þess að athuga að minnsta kosti einn eða tvo stuðningstoppa.
- Hunsa skörun: mörg virkir hópar geta lagt sitt af mörkum nálægt sömu bylgjutölunni.
- Að sleppa staðfestingu þegar aukefni, blöndur, oxun eða mengun geta brenglað litrófið.
Staðfestingarráðgjöf
Þegar tvíræðni er eftir, staðfestu tilgátuna með DSC, GC-MS eða TGA, sérstaklega fyrir blöndur, niðurbrotin sýni og fylltar fjölliður.
Ritlist á bak við þessar úthlutanir
-
Acetate öryggi 1,0
“The strong band at 2354 indicated C=O vibration of carboxylic groups, aldehydes, and ketones, similar to that reported in FTIR analysis of”
Ocimum basilicum-Mediated Synthesis of Silver Nanoparticles Induces Innate Immune Responses against Cucumber Mosaic Virus in Squash DOI: 10.3390/plants11202707 -
Hydroxyl (O-H) öryggi 1,0
“cm-1 to O-H stretching from water molecules The peak located at 2354 represents the cm-1 A stretching vibration of CH3COO+ groups.”
A facile, sensitive and rapid sensing platform based on CoZnO for detection of fipronil; an environmental toxin. DOI: 10.1002/elan.202000051. -
Alkyl C-H öryggi 1,0
“The result revealed cm-1, C-H complete reduction in the intensity of SCB bands at 2354 and noncellulosic materials and stretching at 2896”
Senapitakkul 等 - 2020 - Pretreatment of Cellulose from Sugarcane Bagasse w DOI: 10.1021/acsomega.0c03837 -
öryggi 0,95
“Explicit assignment: '2354 (001-L2)'”
Mino 等 - 2014 - CO2 Capture by TiO2 Anatase Surfaces A Combined D DOI: 10.1021/jp507443k -
öryggi 0,9
“Explicit assignment in text.”
Biomaterials based on N,N,N -trimethyl chitosan fibers in wound dressing applications DOI: 10.1016/j.ijbiomac.2015.07.037(2015
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