What absorbs at 1005 cm⁻¹ in an FTIR spectrum?
A band near 1005 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 4 cited sources
Possible functional-group assignments
| Functional group | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| Hydroxyl (O-H) | 2 | 2 | 1.0 |
| Thiol | 1 | 1 | 1.0 |
| Alkyl C-H | 1 | 1 | 1.0 |
| Carboxyl (COOH) | 1 | 1 | 1.0 |
| Silicon-oxygen (Si-O) | 1 | 0 | 1.0 |
Ranking reflects accumulated literature evidence, not a single authoritative rule. Always confirm against your sample context.
Literature behind these assignments
-
Carboxyl (COOH) confidence 1.0
“Lastly, a peak at 1005 corresponding to the presence of presence of COO-), followed by another peak at 1020 cm-1, which represents the presence PO groups, was observed, which indicates the presence of carbonated hydroxyapatite in 4 of PO4 g”
Remineralization Potential of Three Restorative Glass Ionomer Cements: An In Vitro Study DOI: 10.3390/jcm12062434 -
Hydroxyl (O-H) confidence 1.0
“C-C-O stretching 1234 C-O stretching 1056 O-H stretching 1005”
Quantification of the Geranium Essential Oil, Palmarosa Essential Oil and Phenylethyl Alcohol in Rosa damascena Essential Oil Using ATR-FTIR Spectroscopy Combined with Chemometrics DOI: 10.3390/foods10081848 -
Thiol confidence 1.0
“It can be known from relative articles (Bernard et al., 2017) figure that, the characteristic peak of M-S-H in the appears at 1005.4cm-1.”
Chen 等 - 2021 - Study on Metakaolin Impact on Concrete Performance DOI: 10.3389/fmats.2021.788079 -
Hydroxyl (O-H) confidence 1.0
“As for the OH stretching bands, they enable a disfor the most intense peak and at ∼1005cm-1 crimination of the serpentine species from each other.”
Fritsch 等 - 2021 - Structural, textural, and chemical controls on the DOI: 10.5194/ejm-33-447-2021
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