What absorbs at 624 cm⁻¹ in an FTIR spectrum?
A band near 624 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
Stutt svar
A band near 624 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 |
|---|---|---|---|
| Metal oxygen | 2 | 2 | 1,0 |
| Amide | 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 |
| Acetate | 1 | 1 | 1,0 |
| Carbon dioxide | 1 | 1 | 1,0 |
| Hydroxyl (O-H) | 1 | 1 | 1,0 |
| Aromatic ring | 1 | 1 | 1,0 |
| Alkyl C-H | 1 | 1 | 1,0 |
| Silicon (Si) | 1 | 0 | 1,0 |
Röðun endurspeglar uppsöfnuð ritrýnisgögn, ekki eina valdboðsreglu. Staðfestu alltaf í samhengi við sýnið þitt.
Möguleg efni
| Efni | Stuðningstindar | Skarast hópar | Tilvitnuð heimildir |
|---|---|---|---|
| copper oxide | 624, 1686, 1384 | Metal oxygen, Methacrylate, Amide | 1 |
| copper oxide nanoparticles | 624, 1317, 1384 | Metal oxygen, Methacrylate, Ketone | 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 624 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
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Amide öryggi 1,0
“In addition, the new FTIR observed 624cm-1 1553cm-1 and the shoulder at peaks at Absorbance of the nanocomposite can be assigned to the amide 582 VI and amide II bands of the γ-crystalline form of 0.5 nylon-10,10.”
[gamma]-Crystalline form of nylon-10,10 in nylon-10,10-montmorillonite nanocomposite DOI: 10.1002/pi.1154 -
Metal oxygen öryggi 1,0
“it is found at about 624 The peak appears on the spectrum, which means that the Cu-O bond was formed.”
Hu 等 - 2022 - Flotation Performance and Adsorption Mechanism of DOI: 10.3390/min12040441 -
Alkyl C-H öryggi 1,0
“The 1003 and 738 are assigned cm-1 N-H to wagging vibration, whereas the band with peak at 624 is attributed to the C-H wagging vibration of the benzene rings and deformation vibration of the TPPS ring.”
Low Blue Dose Photodynamic Therapy with Porphyrin-Iron Oxide Nanoparticles Complexes: In Vitro Study on Human Melanoma Cells DOI: 10.3390/pharmaceutics13122130 -
Hydroxyl (O-H) öryggi 1,0
“3,200-3,550 cm-1 2,371cm-1 is indicated for O-H stretching, 1,624cm-1 The bacterial isolates ZTB15, ZTB24, ZTB28, and ZTB29 were observance for O=C=O stretching, observance for cm-1 tested for their maximum copper (CuSO C=C stretching, 1,05”
Singh 等 - 2023 - Bacteria assisted green synthesis of copper oxide DOI: 10.3389/fchem.2023.1154128 -
Metal oxygen öryggi 1,0
“These results indicated that the carboxyl group was successfully coordinated cm-1 Al3+ with [37], which was further confirmed by the characteristic absorption peak of Al-O at 624”
Bioresponsive Materials for Drug Delivery Based on Carboxymethyl Chitosan/Poly(-Glutamic Acid) Composite Microparticles DOI: 10.3390/md15050127 -
öryggi 0,8
“Text: 'Distinct bands at 624, 770 and 829 were attributed to the stretching and bending'”
Leidenfrost green synthesis method for MoO3 and WO3 nanorods preparation: characterization and methylene blue adsorption ability DOI: 10.1186/s13065-023-00916-3
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