What absorbs at 3048 cm⁻¹ in an FTIR spectrum?
A band near 3048 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 3048 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 |
|---|---|---|---|
| Hydroxyl (O-H) | 2 | 2 | 1,0 |
| Aromatic ring | 1 | 1 | 1,0 |
| Carboxyl (COOH) | 1 | 1 | 1,0 |
| Alkyl C-H | 1 | 1 | 1,0 |
| Hydrogen bond | 1 | 1 | 1,0 |
Röðun endurspeglar uppsöfnuð ritrýnisgögn, ekki eina valdboðsreglu. Staðfestu alltaf í samhengi við sýnið þitt.
Möguleg efni
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 3048 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
-
Hydrogen bond öryggi 1,0
“overtone of strong bands near The wide band at of the five deuteron groups, bound with hydrogen bonds, 3060cm-1 3048cm-1 ca.”
Rozenberg 等 - 2005 - Low-temperature FTIR spectra and hydrogen bonds in DOI: 10.1016/j.saa.2004.05.024 -
Alkyl C-H öryggi 1,0
“In the FT-IR spectrum of 3-ATP, cm-1 asymmetric C-H stretching vibration is observed at 3048 [24] and this band is calculated at cm-1.”
Kalayci 等 - 2021 - EXPERIMENTAL AND THEORETICAL INVESTIGATIONS (FTIR, DOI: 10.4314/bcse.v35i3.11 -
Hydroxyl (O-H) öryggi 1,0
“cm-1 The infrared spectrum of the ligand shows a medium intensity band at 3048 which is assigned to (OH) of the carboxylic acid group.”
Osunniran 等 - 2020 - TOXICOLOGICAL ASSESSMENT OF SYNTHESIZED AND CHARAC DOI: 10.4314/bcse.v34i3.6 -
Aromatic ring öryggi 1,0
“IR spectrum, max, 3448 & 3277 ¼ C-H pyrazoline), 4.02 (1H, dd, J 12.4 Hz and 6.0 Hz, Hb protons of (amine stretching), 3048 (aromatic stretching), 2973, 2929 pyrazoline),4.40(2H,q,J¼7.2Hz,-CH (aliphaticC-Hstretching),1730(C]Ostretchingofd-l”
Coumarin–carbazole based functionalized pyrazolines: synthesis, characterization, anticancer investigation and molecular docking DOI: 10.1039/d1ra03970a -
Hydroxyl (O-H) öryggi 0,8
“Text: 'groups(-OH) stretching vibrations of the hydroxyl and oxygen- tion method ... 3048cm-1 3150cm-1'”
Slaughter 和 Stevens - 2014 - A cost-effective two-step method for enhancing the DOI: 10.1007/s13206-014-8105-3
Ertu með róf með þessu bandi?
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