What absorbs at 544 cm⁻¹ in an FTIR spectrum?
A band near 544 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 8 cited sources
Quick answer
A band near 544 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.
Iespējamie funkcionālo grupu piešķīrumi
| Funkcionālā grupa | Atbalstošie fakti | Citētie avoti | Augstākā pārliecība |
|---|---|---|---|
| Metal oxygen | 6 | 6 | 1,0 |
| Secondary amine | 1 | 1 | 1,0 |
| C n single bond | 1 | 1 | 1,0 |
| Amide | 1 | 1 | 1,0 |
| Water (H2O) | 1 | 1 | 1,0 |
| Carbonyl (C=O) | 1 | 1 | 1,0 |
| N-O bond | 1 | 1 | 1,0 |
| Carboxyl (COOH) | 1 | 1 | 0,9 |
| Phenolic | 1 | 1 | 0,9 |
Rangs atspoguļo uzkrātos literatūras pierādījumus, nevis vienu autoritatīvu noteikumu. Vienmēr apstipriniet atbilstoši parauga kontekstam.
Possible materials
| Materiāls | Atbalstošie pīķi | Overlapping groups | Citētie avoti |
|---|---|---|---|
| ZnO | 544, 1400, 3430 | Metal oxygen, Amide | 1 |
| nanocomposite | 544, 2921, 3300 | Metal oxygen | 1 |
| copolymer | 544, 2921, 1540 | Amide | 1 |
| alumina | 544, 460, 1000 | Metal oxygen | 1 |
Materials are shown only when the same literature pool supports this band and at least one additional characteristic peak.
Spectrum logic
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 544 cm⁻¹ is usually not enough for material identification by itself.
Real-world usage
This type of query is common in polymer identification, unknown plastic screening, QC troubleshooting, recycled-material verification, and literature-backed peak assignment review.
Common mistakes
- Treating one isolated band as proof of a material without checking at least one or two supporting peaks.
- Ignoring overlap: multiple functional groups can contribute near the same wavenumber.
- Skipping validation when additives, blends, oxidation, or contamination may distort the spectrum.
Verification advice
When ambiguity remains, validate the hypothesis with DSC, GC-MS, or TGA, especially for blends, degraded samples, and filled polymers.
Literatūra aiz šiem piešķīrumiem
-
Metal oxygen pārliecība 1,0
“4 FTIR analysis shows the presence of phenolic compounds in Tristaniopsis merguensis leaves Zn2+ Fe3+ extracts interacting with and ions producing sharp absorption at wave number 543.80 cm-1 corresponding to the vibrational mode of the meta”
Fabiani 等 - 2020 - Green synthesis and characterization of Zinc Ferri DOI: 10.1088/1755-1315/599/1/012066 -
pārliecība 1,0
“As of the FT-IR spectrum, the peaks attained at 544 and 447 are a-Fe (aattributes of Fe-O stretching in 2O 3.”
Screening of In Vitro Antibacterial Property of Hematite (α-Fe2O3) Nanoparticles: A Green Approach DOI: 10.1007/s40995-020-00995-0 -
N-O bond pārliecība 1,0
“disappears, B4 also has no peak at 544 and its strongest auto-peak shifts to 505 cm-1, We speculate that because fish bones have strong infrared absorption in 600-500 some”
Wei 等 - 2018 - Enhanced chemical and spatial recognition of fish DOI: 10.1016/j.saa.2018.07.031 -
pārliecība 1,0
“LLM confirmed rule peak-group candidate”
El-Sheekh 和 El-Kassas - 2014 - Application of Biosynthesized Silver Nanoparticles DOI: 10.7314/APJCP.2014.15.16.6773 -
Water (H2O) pārliecība 1,0
“The displacement of ZnO and CeO2 are associated with water molecules bending from 544 to cm(cid:4)1 cm(cid:4)1 cm(cid:4)1 vibrations [21].In the case of ZnO, the peakat 544 551 represents and from 592 to 596 reveals the bonding between”
Effect of the modified hybrid particle on the corrosion inhibition performance of polyolefin based coatings for carbon steel DOI: 10.1016/j.jsamd.2022.100466 -
Amide pārliecība 1,0
“A sharp band appearing around 544 of ultrafine emissions that carry with them surface bound may correspond to in-plane bending of the O =C-N radicals is of grave health concern.”
Kibet 等 - 2018 - Free radicals and ultrafine particulate emissions DOI: 10.1186/s13065-018-0458-6 -
Metal oxygen pārliecība 1,0
“cm-1 Alrededor de 544 se reportan bandas que indica catalíticos de Ni-Mo la presencia del enlace Ce-O que revelan la presencia En la tabla 1 se reportan los valores de área específica de de óxidos de cerio, y los espectros 1a y 1b presentar”
Polo-Hernández 等 - 2017 - DOI: 10.15665/rp.v15i1.755 -
Metal oxygen pārliecība 1,0
“LLM confirmed rule peak-group candidate”
Sankar 和 Ramesan - 2022 - Synthesis, characterization, conductivity, and gas DOI: 10.21203/rs.3.rs-1484974/v1
Vai jums ir spektrs ar šo joslu?
Augšupielādējiet savu FTIR spektru un dažu sekunžu laikā iegūstiet pilnu interpretācijas ziņojumu — maksimumu piešķīrumus ar literatūras atsaucēm, bibliotēku saskaņošanu un pārliecības līmeņa pierādījumu ķēdi.