What absorbs at 1199 cm⁻¹ in an FTIR spectrum?
A band near 1199 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
Kiire vastus
A band near 1199 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) | 3 | 3 | 1,0 |
| Methacrylate | 3 | 3 | 1,0 |
| C-O single bond | 3 | 3 | 1,0 |
| Acetate | 3 | 3 | 1,0 |
| Alkyl C-H | 2 | 2 | 1,0 |
| Hydroxyl (O-H) | 2 | 2 | 1,0 |
| Fluorine (C-F) | 1 | 1 | 1,0 |
| Carbonyl (C=O) | 1 | 1 | 1,0 |
| Silicon-oxygen (Si-O) | 1 | 1 | 1,0 |
| Silicon (Si) | 1 | 1 | 1,0 |
| Carbohydrate | 1 | 1 | 1,0 |
| Phosphate (PO4) | 1 | 1 | 1,0 |
| C c single bond | 1 | 1 | 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 |
|---|---|---|---|
| honey | 1199, 2005, 1345 | Methacrylate, Acetate, C-O single bond | 2 |
| Silica | 1199, 1100, 1080 | Methacrylate, Acetate | 1 |
| Polyamide | 1199, 1663, 1541 | Methacrylate, Acetate | 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 1199 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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Alkyl C-H usaldusväärsus 1,0
“The bands changing between 1199 and tive analysis was determined in the standard mixture represented bending of O-C-H, C-C-H and C-O-H and supplement samples.”
Cebi 等 - 2020 - An evaluation of FTIR spectroscopy for prediction DOI: 10.1080/00218839.2019.1707009 -
Phosphate (PO4) usaldusväärsus 1,0
“rg /jo stretching vibration u rn P-O - - - - 1199 1196 a l/rs”
Wang 和 Guo - 2021 - The impact of trace metal cations and absorbed wat DOI: 10.1098/rsos.201110 -
Carbohydrate usaldusväärsus 1,0
“The absorption peaks located at 1199 are cm-1 assigned as -COH bending at C-6 in cellulose-II.”
Bian 等 - 2021 - Crystalline Structure Analysis of All-cellulose Na DOI: 10.1007/s10570-017-1259-0 -
Hydroxyl (O-H) usaldusväärsus 1,0
“Besides, cm-1 cm-1 an accompanied band around 1199 and 1104 was separately assigned to the stretching vibration of phenol C-O and benzyl hydroxyl C-O [28].”
Fabrication of Glass Fiber Reinforced Composites Based on Bio-Oil Phenol Formaldehyde Resin DOI: 10.3390/ma9110886 -
Silicon (Si) usaldusväärsus 1,0
“Accordingly, in the infrared spectra of S30_20, the sharp absorption peak emerges at 1199 cm-1, which can be assigned to the Si-O stretching vibration in Q3 sites [51].”
Phase Composition of Silica Fume—Portland Cement Systems Formed under Hydrothermal Curing Evaluated by FTIR, XRD, and TGA DOI: 10.3390/ma14112786 -
Alkyl C-H usaldusväärsus 1,0
“and C-C stretching modes, and those around 1199cm-1 1474 are due to the bending modes of O-C-H, Competing Interests”
Identification and classification of honey's authenticity by attenuated total reflectance Fourier-transform infrared spectroscopy and chemometric method DOI: 10.14202/vetworld.2019.1304-1310 -
Carbonyl (C=O) usaldusväärsus 1,0
“stretch with NH deformation), 1262 cm-1 (axial deformation group CN), 1199 cm-1 (carbonyl vibration mode in crystalline phase), and the bands that can be used to characterise the amide group in polyamides are 690 cm-1 group (NH), 580 cm-1 (”
Silva 等 - 2021 - Digital Sublimation Printing on Knitted Polyamide DOI: 10.3390/polym13121969 -
Acetate usaldusväärsus 1,0
“The absorption cm-1 band at 1199 can be assigned to C-O stretching (cid:69)(cid:82)(cid:81)(cid:71)(cid:86)(cid:3)(cid:76)(cid:81)(cid:3)(cid:69)(cid:72)(cid:81)(cid:93)(cid:72)(cid:81)(cid:72)(cid:3)(cid:85)(cid:76)(cid:81)(cid:74)(cid:3)(”
Sumathirathne 和 Karunanayake - 2017 - Synthesis of novel porous tannin-phenol-formaldehy DOI: 10.4038/jnsfsr.v45i3.8186
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.