What absorbs at 883 cm⁻¹ in an FTIR spectrum?
A band near 883 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
Ātra atbilde
A band near 883 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.
Iespējamie funkcionālo grupu piešķīrumi
| Funkcionālā grupa | Atbalstošie fakti | Citētie avoti | Augstākā pārliecība |
|---|---|---|---|
| Methoxy (OCH3) | 4 | 4 | 1,0 |
| Methacrylate | 4 | 4 | 1,0 |
| C-O single bond | 4 | 4 | 1,0 |
| Acetate | 4 | 4 | 1,0 |
| Alkyl C-H | 3 | 3 | 1,0 |
| Metal oxygen | 2 | 1 | 1,0 |
| Secondary amine | 1 | 1 | 1,0 |
| C n single bond | 1 | 1 | 1,0 |
| Amide | 1 | 1 | 1,0 |
| Carbonate | 1 | 1 | 1,0 |
| Silicon-oxygen (Si-O) | 1 | 1 | 1,0 |
| Carbohydrate | 1 | 1 | 1,0 |
| Alkene (C=C) | 1 | 1 | 1,0 |
| Hydroxyl (O-H) | 1 | 1 | 1,0 |
| Phosphorus | 1 | 0 | 1,0 |
| Phosphate (PO4) | 1 | 0 | 1,0 |
Rangs atspoguļo uzkrātos literatūras pierādījumus, nevis vienu autoritatīvu noteikumu. Vienmēr apstipriniet atbilstoši parauga kontekstam.
Iespējamie materiāli
| Materiāls | Atbalstošie pīķi | Pārklājošās grupas | Citētie avoti |
|---|---|---|---|
| PVA | 883, 1660, 2930 | Acetate, Methacrylate, C-O single bond | 1 |
| nanocomposite | 883, 2921, 3300 | Methacrylate, Acetate, C-O single bond | 1 |
| lignin | 883, 1035, 1510 | Methacrylate, Acetate, C-O single bond | 1 |
| GO | 883, 1720, 1182 | Methacrylate, Acetate, C-O single bond | 1 |
Materiāli tiek parādīti tikai tad, ja šo joslu un vismaz vienu papildu raksturīgo pīķi atbalsta tā pati literatūras kopa.
Spektra loģika
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 883 cm⁻¹ is usually not enough for material identification by itself.
Reālās pasaules izmantošana
Šāda veida vaicājums ir izplatīts polimēru identificēšanā, nezināmas plastmasas skrīningā, kvalitātes kontroles problēmu risināšanā, pārstrādāto materiālu pārbaudē un ar literatūru pamatotā pīķu piešķīruma pārskatā.
Biežākās kļūdas
- Vienas izolētas joslas uzskatīšana par materiāla pierādījumu, nepārbaudot vismaz vienu vai divus atbalsta pīķus.
- Ignorējot pārklāšanos: vairākas funkcionālās grupas var dot ieguldījumu tuvu tam pašam viļņa skaitlim.
- Izlaist validāciju, ja piedevas, maisījumi, oksidācija vai piesārņojums var izkropļot spektru.
Verifikācijas padoms
Ja joprojām pastāv neskaidrība, apstipriniet hipotēzi ar DSC, GC-MS vai TGA, īpaši maisījumiem, noārdītiem paraugiem un pildītiem polimēriem.
Literatūra aiz šiem piešķīrumiem
-
Acetate pārliecība 1,0
“This means that increasing the J Mater Sci: Mater Electron cm-1 3-, the absorption peak at 1132 is peak of NO the characteristic peak of C-O bond, and the cm-1 absorption peak at 883 it may be due to the”
Annealing temperature on the microstructure and magnetic properties of magnesium–cobalt ferrite prepared by sol-gel self-propagating method DOI: 10.1007/s10854-020-04778-6 -
pārliecība 1,0
“The peak located at 883 could be assigned to cm-1 cm-1 Zn-O bending vibration.”
Al-Qahtani 等 - 2022 - Structural, morphological, optical and electrochem DOI: 10.15251/JOR.2022.182.187 -
pārliecība 1,0
“[42] described that deformation of the iron oxide lattice peak at 883 due to the bonding of Fe 3O particles with surface OH groups.”
Study of structural, optical and electrical properties of La3+ doped Mg0.25 Ni0.15 Cu0.25 Co0.35 Fe2-x Lax O4 spinel ferrites DOI: 10.1016/j.physb.2020.412565 -
Alkene (C=C) pārliecība 1,0
“With the incorporation of GO with PVA, the FTIR spectra indicated the formation of common properties such as O-H, C=O, C=C, -CH2, C-O stretching, and C-H bending at 3741.18 cm-1, 1774.84 cm-1, 1689.04 cm-1, 1511.76 cm-1, 1182.03 cm-1, and 8”
Evaluation of Structural and Optical Properties of Graphene Oxide-Polyvinyl Alcohol Thin Film and Its Potential for Pesticide Detection Using an Optical Method DOI: 10.3390/photonics9050300 -
Acetate pārliecība 1,0
“1027 1022 1026 Stretching C-O of C-O-C carbohydrate and ester Symmetric stretching vibration of C-O-C of 1,4 glycoSymmetric stretching C-O and/or symmetric 883 881 sidic links, characteristic of polysaccharides structure 945”
Flores-Hernandez 等 - 2021 - Synthesis of a Biodegradable Polymer of Poly (Sodi DOI: 10.3390/polym13040504 -
pārliecība 1,0
“The appearance of the absorption peak at 883 is Si-O-C FR005TN A50 tensile tester using dumbbell-shaped specimens ascribed to the vibration absorption of the bond, mm·min-1 with a crosshead speed of 500 with reference to the indicating that”
Li 等 - 2023 - Triple Silicon, Phosphorous, and Nitrogen-Grafted DOI: 10.1021/acsomega.3c00714 -
Acetate pārliecība 1,0
“View the reduction of the band ''C-O-C'' (883 n (p=0.174) of the LCUs on the KHN (Table 6).”
Torres 等 - 2014 - Degree of conversion and hardness of a silorane-ba DOI: 10.2341/12-479 -
Carbonate pārliecība 1,0
“and calcite (CaCO3) with characteristic IR absorbance bands at 1433 cm-1, 883 cm-1.”
Application of Advanced Analytical Techniques in Organic Cultural Heritage: A Case Study of Ancient Architecture Relics in the Palace Museum (Beijing) DOI: 10.3390/coatings12050636
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