What absorbs at 2070 cm⁻¹ in an FTIR spectrum?
A band near 2070 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 2070 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 |
|---|---|---|---|
| Adsorbed carbon monoxide | 2 | 2 | 1,0 |
| C=n | 1 | 1 | 1,0 |
| Carbon dioxide | 1 | 1 | 1,0 |
| Thiocyanate | 1 | 1 | 0,8 |
Reiting kajastab kogunenud kirjanduslikke tõendeid, mitte ühte autoriteetset reeglit. Kinnitage alati oma proovi kontekstis.
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 2070 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
-
usaldusväärsus 1,0
“Lack for 1 h at 323 K) on fresh surface (top spectrum) reveals a of oxidized Pd adsorption sites due to the reducing effect of set of vibrational features at 2070, 1980, 1931, 1504, 1463, CO also enables us to rule out the presence of carbo”
Sulfur Poisoning and Regeneration Behavior of Perovskite-Based NO Oxidation Catalysts DOI: 10.1007/s11244-016-0721-9 -
Adsorbed carbon monoxide usaldusväärsus 1,0
“The absorption peak observed at 2070 cm-1 is due to 0.05 linearly adsorbed CO on the Pt surface [1].”
Setup, sensitivity and application of thin electrolyte layer ATR-FTIR spectroscopy DOI: 10.1016/j.jelechem.2004.01.028 -
Adsorbed carbon monoxide usaldusväärsus 1,0
“cm-1), 2300-2400 625-725 carbon monoxide (CO: cm-1), 2000-2200 sulfide carbonyl (COS: double peaks at 2070;”
Kinetic analysis of the thermal decomposition of a carbon fibre-reinforced epoxy resin laminate DOI: 10.1016/j.jaap.2017.07.002 -
Carbon dioxide usaldusväärsus 1,0
“This result clearly indicates that the three peaks at 2041, 2021, and 2070 cm-1 are not associated with just one molecule of Co2(CO)8.”
Wang Hang 等 - 2013 - In situ FTIR study of low-pressure hydroformylatio DOI: 10.1016/S1872-2067(11)60504-4 -
C=n usaldusväärsus 1,0
“2070 cm-1 C=N stretch, 3000 cm-1 C-H stretch c.”
Walters 等 - 2005 - Structure of a-C N H prepared from ammonia DOI: 10.1557/JMR.2005.0423 -
usaldusväärsus 0,9
“Band at 2070-2030 due to CO on Rh”
Structure and reactivity of Au–Rh bimetallic clusters on titanate nanowires, nanotubes and TiO2(110) DOI: 10.1016/j.cattod.2011.06.002 -
Thiocyanate usaldusväärsus 0,8
“Text: 'shoulder at 2070' and 'SCN-'”
Johnson 等 - 2021 - An ultrafast vibrational study of dynamical hetero DOI: 10.1063/5.0044822
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.