What absorbs at 3364 cm⁻¹ in an FTIR spectrum?
A band near 3364 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
Hiter odgovor
A band near 3364 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.
Možne dodelitve funkcionalnih skupin
| Funkcionalna skupina | Podporna dejstva | Citirani viri | Najvišje zaupanje |
|---|---|---|---|
| Hydroxyl (O-H) | 5 | 5 | 1,0 |
| Methacrylate | 2 | 2 | 1,0 |
| Acetate | 2 | 2 | 1,0 |
| N h | 2 | 2 | 1,0 |
| Methoxy (OCH3) | 1 | 1 | 1,0 |
| C-O single bond | 1 | 1 | 1,0 |
| Secondary amine | 1 | 1 | 1,0 |
| Ketone | 1 | 1 | 1,0 |
| Ester | 1 | 1 | 1,0 |
| Carboxyl (COOH) | 1 | 1 | 1,0 |
| Carbonyl (C=O) | 1 | 1 | 1,0 |
| Amide | 1 | 1 | 1,0 |
| Amine primary | 1 | 1 | 1,0 |
Razvrstitev odraža zbrane literaturne dokaze, ne enega avtoritativnega pravila. Vedno preverite glede na kontekst vašega vzorca.
Možni materiali
| Material | Podporni vrhovi | Prekrivajoče se skupine | Citirani viri |
|---|---|---|---|
| graphene | 3364, 1720, 2097 | Methacrylate, Acetate, Hydroxyl (O-H) | 1 |
| GO | 3364, 1720, 1182 | Methacrylate, Acetate, Hydroxyl (O-H) | 1 |
Materiali so prikazani le, ko ista literaturna podlaga podpira ta pas in vsaj en dodatni karakteristični vrh.
Logika spektra
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 3364 cm⁻¹ is usually not enough for material identification by itself.
Uporaba v resničnem svetu
Ta vrsta poizvedbe je pogosta pri identifikaciji polimerov, pregledovanju neznanih plastičnih mas, odpravljanju težav pri QC, preverjanju recikliranih materialov in literaturno podprtem pregledu dodelitev vrhov.
Pogoste napake
- Obravnavanje enega izoliranega pasu kot dokaza o materialu brez preverjanja vsaj enega ali dveh podpornih vrhov.
- Ignoriranje prekrivanja: več funkcionalnih skupin lahko prispeva blizu istega valovnega števila.
- Izpuščanje validacije, ko lahko dodatki, mešanice, oksidacija ali kontaminacija popačijo spekter.
Nasvet za preverjanje
Ko ostaja dvoumnost, potrdite hipotezo z DSC, GC-MS ali TGA, zlasti za mešanice, degradirane vzorce in polnjene polimere.
Literatura za temi dodelitvami
-
zaupanje 1,0
“marcescens et produced by is prodigiosin (Srimanthi 1820-1600 The other peak at 3364 (stretching al., 2017) and the bacterial cell has to be broken to get in N-H) represented amine functional group.”
Kusdiyantini 等 - 2019 - Characteristics of a red-pigmented thermotolerant DOI: 10.21161/mjm.190382 -
Hydroxyl (O-H) zaupanje 1,0
“LLM confirmed rule peak-group candidate”
Cai - 2014 - Synthesis and Structure Optimization of Schiff Bas DOI: 10.14233/ajchem.2014.17137 -
Amine primary zaupanje 1,0
“2 (spectrum h) shows characteristic bands at 3460.4 and 3363.5 cm-1 (NH2 stretching), 1662.8 cm-1 (C=O cm-1 p-Aminobenzoic acid (spectrum h) shows characteristic bands at 3460.4 and 3363.5 stretching), 1624.3 cm-1 (NH2 in plane deformation)”
Garbacz 和 Wesolowski - 2018 - DSC, FTIR and Raman Spectroscopy Coupled with Mult DOI: 10.3390/molecules23092136 -
Hydroxyl (O-H) zaupanje 1,0
“explicit assignment in text”
James 等 - 2022 - Synthesis and Characterization of Novel Nano-carbo DOI: 10.15376/biores.17.3.4452-4469 -
N h zaupanje 1,0
“cm-1 (cid:1)NH the uncoupled vibrations show the usual narrowing and red asym mode, the calculated frequency (3358 2 shift on cooling, which have been found to be characteristic [7]) is almost coincident with the experimental value (3364 cm”
Rozenberg 等 - 2004 - Low temperature FTIR spectroscopy and hydrogen bon DOI: 10.1016/S1386-1425(03)00251-8 -
Hydroxyl (O-H) zaupanje 1,0
“Furthermore, cm-1 ν(O-H) DP-M had a band of at 3364 that belonged to the OH group from the methanol in the lattice (Fig.”
Somphon 和 Makatan - 2019 - Characterization of donepezil prepared by cogrindi DOI: 10.2306/scienceasia1513-1874.2019.45.028 -
Acetate zaupanje 1,0
“After being reduced and modified by HNH, the intensities of hydroxyl groups and C-O-C stretching stretching vibration of hydroxyl groups was observed as a broad strong band centered at 3364 cm-1.”
One-Step Reduction and Surface Modification of Graphene Oxide by 3-Hydroxy-2-Naphthoic Acid Hydrazide and Its Polypropylene Nanocomposites DOI: 10.3390/nano7020025 -
Hydroxyl (O-H) zaupanje 0,9
“Explicit assignment in text”
Cetinkaya 等 - 2020 - D-Glucose-fatty Acid Ester Synthesis with or witho DOI: 10.5650/jos.ess20072
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