What absorbs at 2936 cm⁻¹ in an FTIR spectrum?
A band near 2936 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
Možná přiřazení funkčních skupin
| Funkční skupina | Podpůrná fakta | Citované zdroje | Nejvyšší spolehlivost |
|---|---|---|---|
| Alkyl C-H | 12 | 11 | 1,0 |
| Hydroxyl (O-H) | 2 | 2 | 1,0 |
| Ring structure | 1 | 1 | 1,0 |
Pořadí odráží nahromaděné literární důkazy, nikoli jediné autoritativní pravidlo. Vždy potvrďte v kontextu vašeho vzorku.
Literatura za těmito přiřazeními
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Alkyl C-H spolehlivost 1,0
“The origin cm-1 of the vibration bands is as follows: at 3389 due to the NH stretching vibrations, cm-1 cm-1 at 2936 due to a CH-stretching vibrations, at 620 due to CH out-of-plane bending vibration.”
Synthesis and characterization thin films of conductive polymer (PANI) for optoelectronic device application DOI: 10.1063/1.4948838 -
Alkyl C-H spolehlivost 1,0
“Stretching 3415, 1651 CH Asymmetric stretching 2936 3 CH”
Qin 等 - 2023 - Preparation and properties of silica solmelamine DOI: 10.1080/15685551.2022.2162280 -
Alkyl C-H spolehlivost 1,0
“The peak at 2936 the ultimate tensile strength decreases at a 2.5% content corresponds to the C-H stretching whereas the peaks of chestnut husks and remains constant at 5% and 7.5%”
Preparation and characterization of a novel starch–chestnut husk biocomposite DOI: 10.1007/s42452-019-1204-y -
Alkyl C-H spolehlivost 1,0
“stretching 2984 2 -CH Injection temperature (s) 20 3 3 -CH stretching 2936 Postinjection time (s) 10”
Cardenas-Trivino 等 - 2019 - Synthesis and Properties of Bionanocomposites of P DOI: 10.1155/2019/4520927 -
Alkyl C-H spolehlivost 1,0
“In fact, in the presence of VeoVa, the ratio between larger number of CH groups in its side chain, the attribution of the band at ~2875 as 2 the intensities of the band at ~2875 cm-1 and the maximum band at 2936 cm-1 doubles: a spectral mar”
De Sa 等 - 2021 - Tracing Poly(Vinyl Acetate) Emulsions by Infrared DOI: 10.3390/polym13213609 -
Alkyl C-H spolehlivost 1,0
“cm-1) cm-1) ν(C-H) ν(C-H) the bands of (at 2936 and (at 2858 vibrations split into two partially asym sym cm-1”
Drzewicz 等 - 2020 - Vibrational Dynamics of a Chiral Smectic Liquid Cr DOI: 10.3390/cryst10080655 -
Hydroxyl (O-H) spolehlivost 1,0
“Whereas the bands at 2936 and 2847 cm-1 stretching vibrations in aromatic and aliphatic O-H groups.”
Guo 等 - 2020 - The Influence of Compatibility on the Structure an DOI: 10.3390/polym12010056 -
Alkyl C-H spolehlivost 1,0
“PVA cm-1 peaks were shown at 3265 (OH hydrogen cm-1 bonds), 2936 (CH vibrations), 1739 (C=O increase the conductivity of the electrospinning of remaining acetate groups), and 1084 and 1416 cm-1 solution, causing a reduction in the diameter”
Hedayatyanfard 等 - 2019 - Semi-IPN Films and Electrospun Nanofibers Based on DOI: 10.22037/ijpr.2019.1100712
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