What absorbs at 1356 cm⁻¹ in an FTIR spectrum?
A band near 1356 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
Schnelle Antwort
A band near 1356 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.
Mögliche Funktionsgruppenzuweisungen
| Funktionelle Gruppe | Unterstützende Fakten | Zitierte Quellen | Höchstes Vertrauen |
|---|---|---|---|
| Carboxyl (COOH) | 1 | 1 | 1,0 |
| Hydroxyl (O-H) | 1 | 1 | 1,0 |
| C-O single bond | 1 | 1 | 1,0 |
| Ring structure | 1 | 1 | 1,0 |
| Imide | 1 | 1 | 1,0 |
| Secondary amine | 1 | 1 | 1,0 |
| C n single bond | 1 | 1 | 1,0 |
| Amide | 1 | 1 | 1,0 |
| Ammonium | 1 | 1 | 1,0 |
| Sulfate (SO4) | 1 | 1 | 1,0 |
| Carbonate | 1 | 1 | 1,0 |
| Nitrate | 1 | 1 | 1,0 |
| Alkyl C-H | 1 | 1 | 0,9 |
| N c o | 1 | 1 | 0,7 |
Das Ranking spiegelt die gesammelte Literatur Evidenz wider, nicht eine einzelne maßgebliche Regel. Bestätigen Sie immer anhand Ihres Probenkontexts.
Mögliche Materialien
| Material | Unterstützende Peaks | Überlappende Gruppen | Zitierte Quellen |
|---|---|---|---|
| graphene oxide | 1356, 1150, 3400 | Hydroxyl (O-H), C-O single bond, Carboxyl (COOH) | 1 |
| zinc oxide | 1356, 1627, 1638 | C-O single bond, Carboxyl (COOH) | 1 |
| goethite | 1356, 1470, 696 | Hydroxyl (O-H), Carboxyl (COOH), C-O single bond | 1 |
| graphene oxide (GO) | 1356, 1400, 1580 | C-O single bond, Hydroxyl (O-H), Carboxyl (COOH) | 1 |
Materialien werden nur angezeigt, wenn derselbe Literaturpool diese Bande und mindestens einen weiteren charakteristischen Peak unterstützt.
Spektrumslogik
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 1356 cm⁻¹ is usually not enough for material identification by itself.
Praktische Anwendung
Diese Art von Abfrage ist üblich bei der Polymeridentifikation, dem Screening unbekannter Kunststoffe, der Fehlersuche in der Qualitätskontrolle, der Verifizierung von Recyclingmaterial und der literaturgestützten Überprüfung der Peakzuordnung.
Häufige Fehler
- Behandlung einer isolierten Bande als Beweis für ein Material, ohne mindestens einen oder zwei unterstützende Peaks zu überprüfen.
- Überlappung ignorieren: Mehrere funktionelle Gruppen können nahe der gleichen Wellenzahl beitragen.
- Überspringen der Validierung, wenn Additive, Mischungen, Oxidation oder Verunreinigungen das Spektrum verfälschen können.
Beratung zur Verifizierung
Wenn weiterhin Mehrdeutigkeit besteht, validieren Sie die Hypothese mit DSC, GC-MS oder TGA, insbesondere bei Mischungen, degradierten Proben und gefüllten Polymeren.
Literatur hinter diesen Zuweisungen
-
Nitrate Vertrauen 1,0
“The use of ATR-FTIR led to the identification of absorption bands characteristic of sulfate, ammonium, nitrate, and carbonate by vibrational frequencies at 603, 615, 670, and 1100 cm-1 for SO42--, at 1414 cm-1 for NH4+, at 825 and 1356 cm-1”
Varrica 等 - 2019 - ATR-FTIR Spectral Analysis and Soluble Components DOI: 10.3390/ijerph16142507 -
Amide Vertrauen 1,0
“The absorption peaks at 1356 and and 1380 cm-1 and ~720 were attributed to C-N stretching and the deformation vibration of the imide ring, cm-1, respectively.”
Azobenzene Functionalized “T-Type” Poly(Amide Imide)s vs. Guest-Host Systems— A Comparative Study of Structure-Property Relations DOI: 10.3390/ma13081912 -
Vertrauen 1,0
“NO1417cm-1 1620 and bands, assigned to C ion vibration solids are deliquesced, identified by the broader fea4 3 1465cm-1 1356cm-1 (Wang et al., 2019), and weaker band indicate ture band at (seen Fig.”
Ma 等 - 2022 - A comprehensive study on hygroscopic behaviour and DOI: 10.5194/acp-22-10955-2022 -
C-O single bond Vertrauen 1,0
“The band at 1356 cm-1 is due to C-OH stretching of O-H groups, while the band at at ~1600 can be attributed to stretching mode of the carbon skeletal network to cm-1 1045 and at 1141 cm-1 can be also attributed to epoxy and alkoxy C-O group”
Maggira 等 - 2019 - Synthesis of Graphene Oxide Based Sponges and Thei DOI: 10.3390/molecules24112086 -
Carboxyl (COOH) Vertrauen 1,0
“(cid:3) s(COO) cm-1 ∼1710 ∼1365 (cid:3) at and 1290 associated with protonated COOH bands s(COO) ∼1356 (cid:3)”
Dynamic adsorption process of phthalate at goethite/aqueous interface: An ATR-FTIR study DOI: 10.1016/j.colsurfa.2013.10.021 -
Vertrauen 0,9
“D band related to disordered carbons with sp3 hybridization”
Emrooz 等 - 2021 - Zinc-salt assisted synthesis of three-dimensional DOI: 10.1038/s41598-021-01151-3 -
Alkyl C-H Vertrauen 0,9
“Text: 'band derived from the -C-H group at a wavenumber of 1356 cm-1'”
Preparation and Characterization of Indomethacin Supramolecular Systems with -Cyclodextrin in Order to Estimate Photostability Improvement DOI: 10.3390/molecules26247436 -
Vertrauen 0,7
“Bands attributed to C=N-C and N-C-O”
Nanoporous Polymer Films of Cyanate Ester Resins Designed by Using Ionic Liquids as Porogens DOI: 10.1186/s11671-017-1900-8
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