What absorbs at 595 cm⁻¹ in an FTIR spectrum?
A band near 595 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 5 cited sources
Quick answer
A band near 595 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 | 2 | 2 | 1.0 |
| Hydroxyl (O-H) | 1 | 1 | 1.0 |
| Water (H2O) | 1 | 0 | 1.0 |
| Oxygen heterocycle | 1 | 0 | 1.0 |
| Ring structure | 1 | 0 | 1.0 |
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 |
|---|---|---|---|
| copper oxide | 595, 624, 1686 | Hydroxyl (O-H), Metal oxygen | 1 |
| copper oxide nanoparticles | 595, 624, 1317 | Hydroxyl (O-H), 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 595 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
“cm-1 all variations at 595.4 The characteristic stretching modes of O-H bands at 3572 are also 32noticed in all aging time variations [18].”
Permatasari 和 Yusuf - 2019 - Characteristics of Carbonated Hydroxyapatite Based DOI: 10.1088/1757-899X/546/4/042031 -
confidence 1.0
“In the FTIR spectra of CuO from the traditional chemical synthesis, Cu-O stretching was observed at 494 and 595 cm-1 (Figure 2a).”
Green and Traditional Synthesis of Copper Oxide Nanoparticles—Comparative Study DOI: 10.3390/nano10122502 -
Metal oxygen confidence 1.0
“The vital absorption region of W-OH 600-1000cm-1 shows nonidentical morphologies existing 949cm-1 O-W-O various sidebars of the infrared spectrum, and also, it is the 595cm-1 W=O features of O-W-O stretching vibrations in the WO crystal”
Surakasi 等 - 2022 - Methylene Blue Dye Photodegradation during Synthes DOI: 10.1155/2022/2882048 -
confidence 0.8
“Explicit assignment: 'tetrahedral A-site (573 cm-1 for Ag- ... 595 delafossite' implies both peaks are tetrahedral A-site.”
Influence of Elastic and Optical Properties on AgFeO2 and AgCrO2 Delafossite to be Applied in High-Frequency Applications DOI: 10.1007/s11837-022-05170-x -
confidence 0.7
“Assigned to v1”
Impact of rare-earth ions on the physical properties of hexaferrites Ba0.5Sr0.5RE0.6Fe11.4O19, (RE = La, Yb, Sm, Gd, Er, Eu, and Dy) DOI: 10.1016/j.jallcom.2021.159812
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