What absorbs at 1607 cm⁻¹ in an FTIR spectrum?
A band near 1607 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
Possible functional-group assignments
| Functional group | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| Aromatic ring | 2 | 2 | 0.9 |
| Alkene (C=C) | 2 | 2 | 0.9 |
| Carboxyl (COOH) | 2 | 2 | 0.8 |
| N h | 1 | 1 | 0.9 |
| Carbonyl (C=O) | 1 | 1 | 0.9 |
| Alkyl C-H | 1 | 1 | 0.9 |
| C c single bond | 1 | 1 | 0.9 |
| Amide | 1 | 0 | 0.7 |
Ranking reflects accumulated literature evidence, not a single authoritative rule. Always confirm against your sample context.
Literature behind these assignments
-
confidence 1.0
“Explicit assignment: '1590, 1607, 1635 (vibrational mode of furan)'”
Ballav 和 Biswas - 2004 - Preparation and evaluation of nanocomposites of po DOI: 10.1002/pi.1562 -
confidence 0.9
“Text: '1607 (A)'”
Routh 等 - 2009 - Self assembly of poly(o-methoxy aniline) with RNA DOI: 10.1016/j.bpc.2009.05.004 -
confidence 0.9
“Explicit assignment: OCO- stretching band.”
Tabak 等 - 2011 - Structural analysis of naproxen-intercalated bento DOI: 10.1016/j.cej.2011.09.027 -
C c single bond confidence 0.9
“Text: 'C-C (aromatic) reference peaks (1607'”
Al-Hamdan 等 - 2020 - Influence of Hydroxyapatite Nanospheres in Dentin DOI: 10.3390/polym12122948 -
Alkyl C-H confidence 0.9
“Explicit assignment in text: 'aliphatic (C=C) reference peaks recorded at 1607 and 1638'”
Al-Qahtani 等 - 2022 - Influence of Concentration Levels of beta-Tricalci DOI: 10.3390/nano12050853 -
Aromatic ring confidence 0.9
“Explicit assignment: 'C-C aromatic reference peaks (1607'”
Alqarawi 等 - 2021 - Influence of Different Conditioning Treatments on DOI: 10.3390/polym13101555 -
Alkene (C=C) confidence 0.9
“C=C stretch”
Cankaya 等 - 2021 - Preparation of poly(MPAEMA)halloysite Nanocomposi DOI: 10.29356/jmcs.v65i2.1257 -
confidence 0.9
“Peak at ~1607 cm-1 corresponds to aromatic C=C bonds.”
Kuzminova 等 - 2022 - Novel Mixed Matrix Membranes Based on Polymer of I DOI: 10.3390/membranes12010014
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