What absorbs at 1622 cm⁻¹ in an FTIR spectrum?
A band near 1622 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
Mga posibleng pagtatalaga ng functional-group
| Grupong functional | Mga sumusuportang katotohanan | Mga nasiping sanggunian | Pinakamataas na kumpiyansa |
|---|---|---|---|
| Hydroxyl (O-H) | 10 | 8 | 1.0 |
| Alkene (C=C) | 9 | 8 | 1.0 |
| Carboxyl (COOH) | 8 | 8 | 1.0 |
| Carbonyl (C=O) | 8 | 8 | 1.0 |
| Amide | 7 | 7 | 1.0 |
| Alkyl C-H | 6 | 6 | 1.0 |
| Aromatic ring | 5 | 5 | 1.0 |
| N h | 5 | 5 | 1.0 |
| Methacrylate | 3 | 3 | 1.0 |
| Acetate | 3 | 3 | 1.0 |
| Protein | 2 | 2 | 1.0 |
| C-O single bond | 2 | 2 | 1.0 |
| Nitrogen heterocycle | 2 | 2 | 1.0 |
| N-O bond | 2 | 2 | 1.0 |
| C=n | 2 | 2 | 1.0 |
| Ketone | 2 | 2 | 1.0 |
| Ester | 2 | 2 | 1.0 |
| Ring structure | 2 | 1 | 1.0 |
| Protein beta sheet | 2 | 1 | 1.0 |
| Secondary amine | 1 | 1 | 1.0 |
| Methoxy (OCH3) | 1 | 1 | 1.0 |
| S eq o | 1 | 1 | 1.0 |
| Amino acid | 1 | 1 | 1.0 |
| Protein alpha helix | 1 | 1 | 1.0 |
| Metal hydroxyl | 1 | 1 | 1.0 |
| Lipid | 1 | 1 | 1.0 |
| Bromine | 1 | 1 | 1.0 |
| Carbon bromine | 1 | 1 | 1.0 |
| C c single bond | 1 | 1 | 1.0 |
| Urea | 1 | 1 | 0.9 |
Ang pagraranggo ay sumasalamin sa naipon na ebidensya ng literatura, hindi isang solong awtoritatibong tuntunin. Palaging kumpirmahin laban sa konteksto ng iyong sample.
Literatura sa likod ng mga pagtatalagang ito
-
Hydroxyl (O-H) kumpiyansa 1.0
“for the fragment and 1578 and 1622 cm-1 (CI), hydroxyl (HI), and carbon-oxygen (COI) indexes representative of the degree of Finally, new peaks at 1653 cm-1 also appear in the IR spectrum of UV-aged PS fragdegradation of particles.”
Campanale 等 - 2023 - Fourier Transform Infrared Spectroscopy to Assess DOI: 10.3390/polym15040911 -
Hydroxyl (O-H) kumpiyansa 1.0
“= υ chain were clearly visible at 2915, 2876, and 1370 In Figure 1B, for CuO nanoparnanoparticles, two peaks, one at 3418 cm-1 of the O-H stretching and the other at 1622 cm-1 cm-1 cm-1 ticles, two peaks, one at 3418 of the O-H stretching a”
Chitosan Capped Copper Oxide Nanocomposite: Efficient, Recyclable, Heterogeneous Base Catalyst for Synthesis of Nitroolefins DOI: 10.3390/catal12090964 -
Alkene (C=C) kumpiyansa 1.0
“In boiler ash aromatic ring, C=O stretching on the ketones, C=C cm-1, stretching of hemicellulose, and C=C stretching of vinylidene alkenes appeared at 777.60 1621.90 cm-1, cm-1, cm-1, 1064.25 and 790.10 respectively [18].”
Hidayani 等 - 2022 - Acoustic and Mechanical Properties of Polystyrene DOI: 10.37358/Mat.Plast.1964 -
Acetate kumpiyansa 1.0
“In the fly ash, it can be seen that the absorption at 1621.90 cm-1 presented C=O stretching on the ketone.”
Preparation and Characterization of Sound-Absorbent Based on Polystyrene Reinforced Primary Sludge and Fly Ash from Pulp Mill DOI: 10.14716/ijtech.v14i3.5131 -
Aromatic ring kumpiyansa 1.0
“present between 2940 and 2915 and 2870-2850 Although present, the aromatic C=O stretching band is weak, whereas the aromatic C=C stretching band peaking cm-1 at 1622 is relatively strong.”
Mathews 和 Singh - 2016 - Characterization of solid bitumen from Panandhro l DOI: 10.18520/cs/v111/i11/1842-1846 -
C=n kumpiyansa 1.0
“LLM confirmed rule peak-group candidate”
Uptake of Metal Ions (Co(II) and Ni(II)) by Silica-Salicylaldehyde Derived from Rice Husks DOI: 10.1007/s10904-019-01379-7 -
Alkyl C-H kumpiyansa 1.0
“and 1622 C-H stretching of the -CH 2groups and secondary amines) (Socrates, The assignments of the above peaks are presented in at cm-1 1997;”
Tarantilis 等 - 2012 - Monitoring of royal jelly protein degradation duri DOI: 10.3896/IBRA.1.51.2.07 -
C c single bond kumpiyansa 1.0
“Similarly, the second branch of the peak, 1584.42 cm-1 cm-1 is attributed to two simulation peaks of 1621.69 and 1624.96 and once again motions are same in these peaks too, active C-C stretching in the USC rings in different fashions.”
Raman spectroscopy of Bisphenol ‘S’ and its analogy with Bisphenol ‘A’ uncovered with a dimensionality reduction technique DOI: 10.1016/j.molstruc.2018.08.025
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