What absorbs at 2089 cm⁻¹ in an FTIR spectrum?
A band near 2089 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 2 cited sources
Hurtigt svar
A band near 2089 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.
Mulige funktionelle gruppetildelinger
| Funktionel gruppe | Understøttende fakta | Citerede kilder | Højeste tillid |
|---|---|---|---|
| C#c | 1 | 1 | 1,0 |
| Alkyl C-H | 1 | 1 | 1,0 |
| Nitrile | 1 | 1 | 1,0 |
| Water (H2O) | 1 | 1 | 1,0 |
| Thiol | 1 | 0 | 1,0 |
| Ring structure | 1 | 0 | 1,0 |
Rangering afspejler akkumulerede litteraturbeviser, ikke en enkelt autoritativ regel. Bekræft altid mod din prøvekontekst.
Mulige materialer
| Materiale | Understøttende toppe | Overlappende grupper | Citerede kilder |
|---|---|---|---|
| silver nanoparticles | 2089, 1636, 1631 | Alkyl C-H | 1 |
Materialer vises kun, når den samme litteraturpulje understøtter dette bånd og mindst en yderligere karakteristisk top.
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 2089 cm⁻¹ is usually not enough for material identification by itself.
Anvendelse i virkeligheden
Denne type forespørgsel er almindelig ved polymeridentifikation, screening af ukendt plast, fejlfinding i kvalitetskontrol, verifikation af genanvendt materiale og litteraturunderstøttet gennemgang af peak-tildeling.
Almindelige fejl
- Behandling af et isoleret bånd som bevis på et materiale uden at kontrollere mindst en eller to understøttende toppe.
- Ignorerer overlap: flere funktionelle grupper kan bidrage nær samme bølgetal.
- Spring validering over, når additiver, blandinger, oxidation eller forurening kan forvrænge spektret.
Verifikationsrådgivning
Når tvetydighed fortsat består, valider hypotesen med DSC, GC-MS eller TGA, især for blandinger, nedbrudte prøver og fyldte polymerer.
Litteratur bag disse tildelinger
-
Water (H2O) tillid 1,0
“S1 and S2 as well as Table S1 in the Supplementary InformaC≡N displays stretching frequencies at 2089 (strong) and 2152 tion), which is characteristic of coordinated water existing inside cm(cid:3)1, (FeII-C≡N-FeII) C≡N (weak) while Prussia”
Gerber 和 Erasmus - 2018 - Electronic effects of metal hexacyanoferrates An DOI: 10.1016/j.matchemphys.2017.09.029 -
Alkyl C-H tillid 1,0
“Figure 3 (curves a, b) shows IR spectrum of R-Ag-NPs and L-Ag-NPs the absorption bands around 543, 981, 1394, 1563, spectrum of R-Ag-NPs and L-Ag-NPs the absorption bands around 543, 981, 1394, 1563, cm-1 and 2089 revealed the presence of a”
Green Synthesis, Characterization, Enzyme Inhibition, Antimicrobial Potential, and Cytotoxic Activity of Plant Mediated Silver Nanoparticle Using Ricinus communis Leaf and Root Extracts DOI: 10.3390/biom11020206
Har du et spektrum med dette bånd?
Upload dit FTIR-spektrum og få en fuld tolkningsrapport — peak-tildelinger med litteraturhenvisninger, biblioteksmatch og en tillidsvurderet beviskæde — på få sekunder.