What absorbs at 1193 cm⁻¹ in an FTIR spectrum?
A band near 1193 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 6 cited sources
Snabbt svar
A band near 1193 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.
Möjliga identifieringar av funktionella grupper
| Funktionell grupp | Stödjande fakta | Citerade källor | Högsta förtroende |
|---|---|---|---|
| Methacrylate | 4 | 4 | 1,0 |
| Acetate | 4 | 4 | 1,0 |
| Methoxy (OCH3) | 3 | 3 | 1,0 |
| C-O single bond | 3 | 3 | 1,0 |
| S eq o | 1 | 1 | 1,0 |
| Ketone | 1 | 1 | 1,0 |
| Ester | 1 | 1 | 1,0 |
| Carboxyl (COOH) | 1 | 1 | 1,0 |
| Carbonyl (C=O) | 1 | 1 | 1,0 |
| Amide | 1 | 1 | 1,0 |
| Phosphorus | 1 | 1 | 1,0 |
| Phosphate (PO4) | 1 | 1 | 1,0 |
| C c single bond | 1 | 1 | 1,0 |
| Lipid | 1 | 0 | 1,0 |
Rankingen speglar ackumulerade litteraturbevis, inte en enda auktoritativ regel. Bekräfta alltid mot din provkontext.
Möjliga material
| Material | Stödjande toppar | Överlappande grupper | Citerade källor |
|---|---|---|---|
| Polyester | 1193, 1700, 1250 | Methacrylate, Acetate, Methoxy (OCH3) | 1 |
Material visas endast när samma litteraturpool stöder detta band och minst en ytterligare karakteristisk topp.
Spektrumlogik
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 1193 cm⁻¹ is usually not enough for material identification by itself.
Användning i verkligheten
Denna typ av fråga är vanlig inom polymeridentifiering, screening av okänd plast, felsökning av kvalitetskontroll, verifiering av återvunnet material och litteraturstödd toppidentifieringsgranskning.
Vanliga misstag
- Behandla ett isolerat band som bevis på ett material utan att kontrollera minst en eller två stödjande toppar.
- Ignorerar överlapp: flera funktionella grupper kan bidra nära samma vågtal.
- Hoppa över validering när tillsatser, blandningar, oxidation eller föroreningar kan förvränga spektrat.
Verifieringsråd
När oklarhet kvarstår, validera hypotesen med DSC, GC-MS eller TGA, särskilt för blandningar, nedbrutna prover och fyllda polymerer.
Litteratur bakom dessa identifieringar
-
Acetate förtroende 1,0
“graph of polyurethane prepolymer were allocated cm-1 1193 assigned to -C-O, -C-C stretching.”
Salem 和 Salama - 2020 - Developing a New Class of UV-curable Polyurethane DOI: 10.21608/ejchem.2019.14853.1906 -
Phosphate (PO4) förtroende 1,0
“Moreover, the significant peak at 1193 cm-1 (medium) was assigned to the vibration of P=O bonds in the phosphate moieties.”
Hung Kim Nguyen 等 - 2020 - Preparation of a Novel Flame Retardant Formulation DOI: 10.3390/ma13010054 -
Acetate förtroende 1,0
“At 1193 the =C-O-C= stretch was detected.”
Solubility Temperature Dependence of Bio-Based Levulinic Acid, Furfural, and Hydroxymethylfurfural in Water, Nonpolar, Polar Aprotic and Protic Solvents DOI: 10.3390/pr9060924 -
förtroende 1,0
“As can be seen in Figure cm-1 after salicylaldoxime treatment, the N-Cu and O-Cu stretch vibrations are found at 1193 and 1152”
Comparison of Adsorption of Phenol O-O and N-O Chelating Collectors at the Malachite/Water Interface in Flotation DOI: 10.3390/min7020020 -
Acetate förtroende 1,0
“Charging 1296 C-O asymmetric stretching vibration in adsorbed or solvated DEC C-O asymmetric stretching vibration in adsorbed 1193 or solvated EC C-O symmetric stretching vibration in adsorbed 1084”
Matsui 等 - 2015 - In-operando FTIR Spectroscopy for Composite Electr DOI: 10.5796/electrochemistry.83.874 -
Acetate förtroende 1,0
“cm-1 4f and Pb 4f 5/2, respectively, and previous studies have reported that the typical binding energy of Moreover, the FTIR spectra of obtained MPS are shown in Figure 9, where the peak at 1718 7/2 cm-1 C=O corresponds to the adsorption o”
Zhou 等 - 2019 - Scalable Fabrication of Metallopolymeric Superstru DOI: 10.3390/nano9071001
Har du ett spektrum med detta band?
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