What absorbs at 3079 cm⁻¹ in an FTIR spectrum?
A band near 3079 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 3079 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 | 2 | 2 | 1,0 |
| Alkene (C=C) | 2 | 1 | 1,0 |
| Ring structure | 1 | 1 | 1,0 |
| Sulfur heterocycle | 1 | 1 | 1,0 |
| Protein | 1 | 1 | 1,0 |
| Carboxyl (COOH) | 1 | 1 | 1,0 |
| Amide | 1 | 1 | 1,0 |
| N h | 1 | 1 | 1,0 |
| C c single bond | 1 | 1 | 1,0 |
Röðun endurspeglar uppsöfnuð ritrýnisgögn, ekki eina valdboðsreglu. Staðfestu alltaf í samhengi við sýnið þitt.
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 3079 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
-
C c single bond öryggi 1,0
“The C C bonds appear in the weak bands 2931 and 3079cm-1 ∼1635cm-1 at (C C H) and (C C).”
Font 等 - 2007 - Fourier transform infrared spectroscopy as a suita DOI: 10.1016/j.aca.2007.07.021 -
öryggi 1,0
“In GaAs grown by liquid encapsulation Czochralski (LEC), the peaks at 3079.2 and 983.3cm(cid:2)1 due to the stretching and wagging mode of N-H were observed at 7K, where its concentration was in 1013cm(cid:2)3 1012 the range from to [15].”
Nishimura 等 - 2007 - Electrical properties of GaAsN film grown by chemi DOI: 10.1016/j.physb.2007.08.183 -
Amide öryggi 1,0
“The absorption of amide B at 3079 showed acid soluble collagen content of 3.7 ± 0.8% of was related to the asymmetric stretching vibrations of C-H the wet mass weight of the skin and protein content of”
Valorization of Salmo salar Skin Waste for the Synthesis of Angiotensin Converting Enzyme-1 (ACE1) Inhibitory Peptides DOI: 10.1007/s12649-023-02141-4 -
Alkyl C-H öryggi 1,0
“LLM confirmed rule peak-group candidate”
Rapid Classification and Recognition Method of the Species and Chemotypes of Essential Oils by ATR-FTIR Spectroscopy Coupled with Chemometrics DOI: 10.3390/molecules27175618 -
Sulfur heterocycle öryggi 1,0
“A peak at 3079 cm-1 in the FTIR spectra of monomer TEBS is due to cm´1 thiophene ring.”
Enzyme-Catalyzed Synthesis of Water-Soluble [1.0]Conjugated Poly[2-(3-thienyl)-Ethoxy-4-Butylsulfonate] DOI: 10.3390/polym8040139
Ertu með róf með þessu bandi?
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