What absorbs at 2082 cm⁻¹ in an FTIR spectrum?
A band near 2082 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 4 cited sources
Hurtigt svar
A band near 2082 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 |
|---|---|---|---|
| Thiocarbonyl | 1 | 1 | 1,0 |
| C=n | 1 | 1 | 1,0 |
| Hydroxyl (O-H) | 1 | 1 | 1,0 |
| Adsorbed carbon monoxide | 1 | 1 | 1,0 |
| C#c | 1 | 1 | 0,9 |
Rangering afspejler akkumulerede litteraturbeviser, ikke en enkelt autoritativ regel. Bekræft altid mod din prøvekontekst.
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 2082 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
-
tillid 1,0
“FTIR cm-1 of 1% Pt/CeO shows a strongly adsorbed CO peak at 2082 corresponding to oxidized Pt.”
Bera 等 - 2003 - Promoting effect of CeO2 in combustion synthesized DOI: 10.1021/jp022132f -
Hydroxyl (O-H) tillid 1,0
“Penicillin conjugated (C≡C silver nanoparticles and plant extracts exhibited characteristic bands at 3,370 (O-H Stretching), 2082 Stretching), 1699 (C = C isolated), 1644 (C = C isolated), 1,423 (C-H bending), 1,368 (C-H Bending), 1,234 (C-”
Murei 等 - 2020 - Functionalization and antimicrobial evaluation of DOI: 10.1038/s41598-020-68290-x -
C=n tillid 1,0
“The peak at 2082 corresponds to the stretching vibrations of -N=C=S group in the dye.”
Siami 等 - 2015 - DOI: 10.4152/pea.201501023 -
C#c tillid 0,9
“Text: 'characteristic absorbance for alkynes was observed in PGG, AHGG and EHGG in the range 2082.3399 cm-1 to 2236.7423 cm-1'”
Hydrolysis, Microstructural Profiling and Utilization of Cyamopsis tetragonoloba in Yoghurt DOI: 10.3390/fermentation9010045
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.