What absorbs at 402 cm⁻¹ in an FTIR spectrum?
A band near 402 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
Możliwe przypisania grup funkcyjnych
| Grupa funkcyjna | Fakty wspierające | Cytowane źródła | Najwyższa wiarygodność |
|---|---|---|---|
| N h | 6 | 5 | 1,0 |
| Secondary amine | 5 | 5 | 1,0 |
| Ammonium | 3 | 3 | 1,0 |
| N-O bond | 3 | 1 | 1,0 |
| C n single bond | 2 | 2 | 1,0 |
| Amide | 2 | 2 | 1,0 |
| Quaternary ammonium | 2 | 2 | 1,0 |
| Carboxyl (COOH) | 1 | 1 | 1,0 |
| Bronsted acid site | 1 | 1 | 1,0 |
| Bromine | 1 | 1 | 1,0 |
| Chlorine | 1 | 1 | 1,0 |
| Ring structure | 1 | 1 | 1,0 |
| C-O single bond | 1 | 1 | 1,0 |
| Aromatic ring | 1 | 1 | 1,0 |
| Amine primary | 1 | 1 | 1,0 |
| Nitrate | 1 | 1 | 1,0 |
| Carbonate | 1 | 1 | 1,0 |
| Hydroxyl (O-H) | 1 | 0 | 1,0 |
| N n bond | 1 | 0 | 1,0 |
Ranking odzwierciedla zgromadzone dowody literaturowe, a nie pojedynczą autorytatywną zasadę. Zawsze potwierdzaj w kontekście swojej próbki.
Literatura stojąca za tymi przypisaniami
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wiarygodność 1,0
“The ESCA spectrum of treated PET revealed that the surface chemistry obtained after plasma polymerizing TFE was one clearly dominated by CF and CF moieties, 2 asdemonstratedbythelargepeaksappearingat291.1and289.5eV,respectively.Asexpected,s”
Cohn 和 Stern - 2000 - Sequential surface derivatization of PET films DOI: 10.1021/ma9900784 -
Carbonate wiarygodność 1,0
“luted peak at 402 eV could be assigned to the in the quaternary Regarding the effect of bicarbonate on nitrate removal, similar findings ammonium species, which are involved in the electrostatic attraction of were reported in the literature”
Kang 和 Kim - 2020 - Synthesis of quaternized mesoporous silica SBA-15 DOI: 10.1016/j.micromeso.2019.109967 -
N h wiarygodność 1,0
“It can be seen from Figure 2a that the peak at 401.6 eV represents NH in the MEL and the peak at 399.3 eV may stand for the nitrogen in the 2 C=N”
Liang 等 - 2020 - Thermal Kinetics of a Lignin-Based Flame Retardant DOI: 10.3390/polym12092123 -
Quaternary ammonium wiarygodność 1,0
“Simon Christian aMBIE The Biocide Toolbox Programme, The University of Auckland, Private Bag 92019, Auckland 1042, New Zealand bSchool of Chemical Sciences, The University of Auckland, Private Bag 92019, Auckland 1042, New Zealand cDepartme”
Anchored quaternary ammonium salts adsorbed on polyurethane film surfaces DOI: 10.1016/j.porgcoat.2019.105343 -
Amine primary wiarygodność 1,0
“The N 1s peak emerged in the GO-PDA spectra was deconvoluted and fitted into three main peaks at binding energies of 402, 399, and 396 eV corresponding to primary amine”
Polydopamine Functionalized Graphene Oxide as Membrane Nanofiller: Spectral and Structural Studies DOI: 10.3390/membranes11020086 -
C-O single bond wiarygodność 1,0
“Among 401 cm-1 them, the absorption at 1044 was mainly attributed to C-O stretching on C-O-C 402”
Beltramino 等 - 2016 - Optimization of sulfuric acid hydrolysis condition DOI: 10.1007/s10570-016-0897-y -
Quaternary ammonium wiarygodność 1,0
“NeSc ]C, [50], while the other two peaks at 398.8eV for N(C, H) 1468cm-1, CeH which is assigned to asymmetric bend in new peak at and 401.72eV, which are associated to the overlapped with Ntert N+ (in quaternary ammonium salt).”
Quaternization of algal/PEI beads (a new sorbent): Characterization and application to scandium sorption from aqueous solutions DOI: 10.1016/j.cej.2019.123210 -
Amide wiarygodność 1,0
“The peak at 402 eV is associated with C-N linkages suggesting that during the plasma treatment new covalent bonds between”
Kaklamani 等 - 2010 - Effect of plasma surface modification on the bioco DOI: 10.1088/1748-6041/5/5/054102
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