What absorbs at 1183 cm⁻¹ in an FTIR spectrum?
A band near 1183 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 7 cited sources
Kiire vastus
A band near 1183 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.
Võimalikud funktsionaalrühmade määramised
| Funktsionaalrühm | Toetavad faktid | Tsiteeritud allikad | Kõrgeim usaldusväärsus |
|---|---|---|---|
| Methoxy (OCH3) | 4 | 4 | 1,0 |
| Methacrylate | 4 | 4 | 1,0 |
| C-O single bond | 4 | 4 | 1,0 |
| Acetate | 4 | 4 | 1,0 |
| Fatty acid | 1 | 1 | 1,0 |
| Sulfonate | 1 | 1 | 1,0 |
| Alkyl C-H | 1 | 1 | 1,0 |
| Silicon carbon | 1 | 1 | 1,0 |
| Silicon (Si) | 1 | 1 | 1,0 |
| Carboxyl (COOH) | 1 | 1 | 1,0 |
| Oxygen heterocycle | 1 | 1 | 1,0 |
| Water (H2O) | 1 | 1 | 1,0 |
| Amide | 1 | 0 | 1,0 |
Reiting kajastab kogunenud kirjanduslikke tõendeid, mitte ühte autoriteetset reeglit. Kinnitage alati oma proovi kontekstis.
Võimalikud materjalid
| Materjal | Toetavad piigid | Kattuvad rühmad | Tsiteeritud allikad |
|---|---|---|---|
| SiO2 | 1183, 1739, 699 | Methoxy (OCH3) | 1 |
| graphene oxide | 1183, 1150, 3400 | Methacrylate, Acetate, C-O single bond | 1 |
| GO | 1183, 1720, 1182 | Methacrylate, Acetate, C-O single bond | 1 |
Materjale kuvatakse ainult siis, kui sama kirjanduse kogum toetab seda riba ja vähemalt ühte täiendavat iseloomulikku piiki.
Spektri loogika
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 1183 cm⁻¹ is usually not enough for material identification by itself.
Reaalse maailma kasutus
Seda tüüpi päring on tavaline polümeeri tuvastamisel, tundmatu plasti sõeluuringul, kvaliteedikontrolli probleemide lahendamisel, ringlussevõetud materjali kontrollimisel ja kirjandusel põhineval piirkinnituste ülevaatel.
Levinud vead
- Ühe isoleeritud riba käsitlemine materjali tõendina ilma vähemalt ühte või kahte toetavat piiki kontrollimata.
- Ülekattumise ignoreerimine: mitu funktsionaalrühma võivad anda panuse sama lainearvu lähedal.
- Valideerimise vahelejätmine, kui lisandid, segud, oksüdatsioon või saastumine võivad spektrit moonutada.
Kontrollimise nõuanne
Kui ebakindlus püsib, kinnitage hüpotees DSC, GC-MS või TGA abil, eriti segude, lagunenud proovide ja täidetud polümeeride puhul.
Nende määramiste taga olev kirjandus
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Water (H2O) usaldusväärsus 1,0
“C60FWS (fullerene water system) samples[20] show four vibration bands of C fullerene at 523-526, 571, 1182.560 cm-1, 1183 and 1429 close to the simulated spectra.”
EL-Barbary - 2016 - Hydrogenated Fullerenes in Space FT-IR Spectra an DOI: 10.1063/1.4953126 -
Oxygen heterocycle usaldusväärsus 1,0
“The slight vibrations at 1183 and 957 cm-1 correspond to epoxy groups (C-O), and”
Sustainable Remedy Waste to Generate SiO2 Functionalized on Graphene Oxide for Removal of U(VI) Ions DOI: 10.3390/su14052699 -
Silicon (Si) usaldusväärsus 1,0
“and 1239 The tion peaks of C-N appeared at 1290 toxic (cell viability >90%), mild (cell viability 60-90%), modercm-1 was attributed to Si-CH due to the presence peak at 1183 ate (cell viability 30-60%) and severe (30%) (30).”
Khan 等 - 2021 - The Structural, Physical, and In Vitro Biological DOI: 10.14744/eej.2020.36349 -
Acetate usaldusväärsus 1,0
“At 1578 and 1390 the asymmetric and, respectively, C=O symmetric stretching vibration of the C=O bond from the carboxylate anion are revealed, while the the symmetric stretching vibration of the bond from the carboxylate anion are revealed,”
Stability and Compatibility Studies of Levothyroxine Sodium in Solid Binary Systems—Instrumental Screening DOI: 10.3390/pharmaceutics12010058 -
Sulfonate usaldusväärsus 1,0
“The peaks at about 1183, 1122 and 1036 cm-1 of LDH-SAS are attributed cm-1 attributed to the stretching vibration of sulfonate groups [41], and the peak at about 833 is the to the stretching vibration of sulfonate groups [41], and the peak”
Aging-Resistant Functionalized LDH–SAS/Nitrile-Butadiene Rubber Composites: Preparation and Study of Aging Kinetics/Anti-Aging Mechanism DOI: 10.3390/ma11050836 -
Acetate usaldusväärsus 1,0
“O stretch), 1183 approach for recrystallization in presence of ultrasound under cooling cm(cid:0) (C-O-C (C-O-C 1 asymmetrical stretching) and 1045 symmetconditions gives plate / rod type crystals unlike corrugated, porous or rical stretchi”
Improvements in azithromycin recrystallization using ultrasound for size reduction DOI: 10.1016/j.ultsonch.2022.105922 -
Acetate usaldusväärsus 1,0
“vulgaris) 1183 and 1185 (stretching vibration of group C-O to 1395 cm-1 to 1395 cm-1 (A.”
Identification of Metabolites with Antibacterial Activities by Analyzing the FTIR Spectra of Microalgae DOI: 10.3390/life12091395
Kas teil on selle ribaga spekter?
Laadige üles oma FTIR spekter ja saage sekunditega täielik tõlgendusaruanne — piikide määramised kirjandusviidetega, raamatukogu vasted ja usaldusväärsusega hinnatud tõendite ahel.