What absorbs at 622 cm⁻¹ in an FTIR spectrum?
A band near 622 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 622 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 | 1 | 1 | 1,0 |
| Methoxy (OCH3) | 1 | 1 | 1,0 |
| Methacrylate | 1 | 1 | 1,0 |
| Acetate | 1 | 1 | 1,0 |
| C-O single bond | 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.
Möguleg efni
| Efni | Stuðningstindar | Skarast hópar | Tilvitnuð heimildir |
|---|---|---|---|
| NiO | 622, 1006, 1450 | Metal oxygen, Methoxy (OCH3), Methacrylate | 1 |
| PE | 622, 1414, 1700 | Methacrylate, Acetate, Methoxy (OCH3) | 1 |
| PP | 622, 1700, 1043 | Methacrylate, Acetate, Methoxy (OCH3) | 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 622 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
-
öryggi 1,0
“The cm-1 Mn2+ ZnS.24 band at 1,105 demonstrate that the doped impurity affected partial structure of cm-1 modes.9 A very strong band at 622 is attributed to Zn-S stretching The band positioned at”
Hu 等 - 2018 - Photoluminescence of ZnS Mn quantum dot by hydrot DOI: 10.1063/1.5010833 -
öryggi 1,0
“The interface potential detected by the probed ((cid:4) ric S O bending vibrations), 622 634 and 650 4”
Simultaneous in situ Kelvin probe and Raman spectroscopy analysis of electrode potentials and molecular structures at polymer covered salt layers on steel DOI: 10.1016/j.electacta.2012.08.042 -
C c single bond öryggi 1,0
“the spectra of the silicon substrate, while that for PMMA on the klarite surface was seen at cm-1 cm-1 cm-1 622 due to C-C-O stretching, 817 (C-O-C symmetric stretching), 1000 E P”
Kundu 等 - 2021 - Identification and removal of microand nano-plas DOI: 10.1016/j.cej.2021.129816. -
öryggi 1,0
“vibrational mode of Ni-O, which corresponds between Ni-O and another better peak at 621.5 cm-1 cm-1, There were sharp peaks like 1121.4 and 1426.6 confirming that the carbonates had”
Venkatachalapathy 等 - 2022 - Synthesis, morphological, structural, functional, DOI: 10.15251/DJNB.2022.174.1441 -
öryggi 0,9
“Assignment: 'TiOMo at 622'”
Errington 等 - 2010 - Synthesis and Structure of the Alkoxido-Titanium P DOI: 10.1007/s10876-010-0329-3 -
öryggi 0,9
“Explicit assignment.”
Afqir 等 - 2018 - Structural, electric and dielectric properties of DOI: 10.2298/PAC1801072A
Ertu með róf með þessu bandi?
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