What absorbs at 600 cm⁻¹ in an FTIR spectrum?
A band near 600 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 600 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.
Possible functional-group assignments
| Functional group | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| Metal oxygen | 21 | 18 | 1.0 |
| Alkyl C-H | 19 | 18 | 1.0 |
| Hydroxyl (O-H) | 14 | 10 | 1.0 |
| Phosphate (PO4) | 13 | 10 | 1.0 |
| Silicon-oxygen (Si-O) | 12 | 11 | 1.0 |
| Silicon (Si) | 7 | 7 | 1.0 |
| Phosphorus | 5 | 5 | 1.0 |
| Methoxy (OCH3) | 5 | 5 | 1.0 |
| Methacrylate | 5 | 5 | 1.0 |
| C-O single bond | 5 | 5 | 1.0 |
| Acetate | 5 | 5 | 1.0 |
| Aromatic ring | 4 | 4 | 1.0 |
| Carboxyl (COOH) | 4 | 4 | 1.0 |
| Water (H2O) | 4 | 4 | 1.0 |
| Chlorine | 4 | 3 | 1.0 |
| Amide | 3 | 3 | 1.0 |
| Carbonyl (C=O) | 3 | 3 | 1.0 |
| Siloxane (Si-O-Si) | 3 | 3 | 1.0 |
| Sulfate (SO4) | 3 | 2 | 1.0 |
| N-O bond | 2 | 2 | 1.0 |
| Ring structure | 2 | 2 | 1.0 |
| Carbonate | 2 | 1 | 1.0 |
| Lignin | 1 | 1 | 1.0 |
| Hydrogen bond | 1 | 1 | 1.0 |
| Isothiocyanate | 1 | 1 | 1.0 |
| Metalloid oxygen | 1 | 1 | 1.0 |
| Carbohydrate | 1 | 1 | 1.0 |
| Ketone | 1 | 1 | 1.0 |
| Ester | 1 | 1 | 1.0 |
| Nitro (NO2) | 1 | 1 | 1.0 |
| Carbon dioxide | 1 | 1 | 1.0 |
| Alkene (C=C) | 1 | 1 | 1.0 |
| Methyl | 1 | 1 | 1.0 |
| Silicon carbon | 1 | 1 | 1.0 |
| C=n | 1 | 1 | 1.0 |
| C c single bond | 1 | 1 | 1.0 |
| S s | 1 | 1 | 1.0 |
| Metal sulfur | 1 | 1 | 1.0 |
| N h | 1 | 1 | 0.5 |
Ranking reflects accumulated literature evidence, not a single fixed rule. Always confirm against your sample context.
Possible materials
| Material | Supporting peaks | Overlapping groups | Cited sources |
|---|---|---|---|
| CdS | 600, 1375, 1092 | Hydroxyl (O-H) | 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 600 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.
Literature behind these assignments
-
Hydroxyl (O-H) confidence 1.0
“It can be concluded that using acetone and toluene could not result in high chemical grafting, silane on the broken edges, and on the external and internal surfaces of and the decomposition peaks above 600 °C in their DTG curves are layers”
Silane functionalization of sodium montmorillonite nanoclay_ The effect of dispersing media on intercalation and chemical grafting DOI: 10.1016/j.clay.2017.12.020 -
Metal sulfur confidence 1.0
“LLM confirmed rule peak-group candidate”
Aziz 等 - 2023 - Water remediation capability of cubic-phase CdS na DOI: 10.15251/DJNB.2023.181.203 -
Hydroxyl (O-H) confidence 1.0
“We validated the signals 1,670cm-1 is consistent with water in strong adsorption band at with DNPH and FDH standards (Sigma Aldrich), with the MS spectrashowninFigure4C,D,respectively.Thesestandardswere the methanol solution, along with the”
Barakoti 等 - 2021 - Formaldehyde Analysis in Non-Aqueous Methanol Solu DOI: 10.3389/fchem.2021.678112 -
confidence 1.0
“The formation of iron oxide NPs was confirmed with these distinctive peaks in the region between [400 and cm-1 600] where these extended peaks corresponded to iron oxide magnetite Fe 3O 4-NPs [30].”
Effect of Ferric Chloride Concentration on the Type of Magnetite (Fe3O4) Nanoparticles Biosynthesized by Aqueous Leaves Extract of Artemisia and Assessment of Their Antioxidant Activities DOI: 10.1007/s10876-020-01868-7 -
confidence 1.0
“This sugand Si-O stretch vibrations lies in the 600 and 700-1200cm-1 2(cid:2)OH gests that the AlM vibration is stronger than that due to region [23].”
Cai 等 - 2007 - A Fourier transform infrared spectroscopic study o DOI: 10.1016/j.saa.2006.02.053 -
Carbonate confidence 1.0
“A broad peak at superimposed on this hump appears at At the hump height decreases, the carbonate peak disappears and many peaks correspond to BST 600◦C appear.”
Datta 和 Agrawal - 2005 - Effect of acetylacetone on the phase formation of DOI: 10.1080/00150190500308611 -
Alkyl C-H confidence 1.0
“achieved the maximum for 20 min and the concentration was cm(cid:1)1, FT-IR spectra showed that acticarbon had the eight charac9 g/1000 g, the transmissivity of the peaks at 3435 2Ostretch,OAH cm(cid:1)1 teristicabsorptionband.AndtheS-Sstre”
Adsorption characteristics of sulfur solution by acticarbon against drinking-water toxicosis DOI: 10.1016/j.sjbs.2016.09.010 -
Phosphate (PO4) confidence 1.0
“Similarly, the peaks cm(cid:3)1 alternative lowering of pH to 4 using dilute nitric acid and raising around 1090, 1040, 961 are characteristic of P-O stretching cm(cid:3)1aredueto the pH to 7 using ammonia solution enhances the process of v”
Geetha 和 Buvaneswari - 2010 - Ammonium hydrogen difluoride induced fluorination DOI: 10.1016/j.materresbull.2010.09.005
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