What absorbs at 3167 cm⁻¹ in an FTIR spectrum?
A band near 3167 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
Kiire vastus
A band near 3167 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 |
|---|---|---|---|
| N h | 2 | 2 | 1,0 |
| Methoxy (OCH3) | 1 | 1 | 1,0 |
| Methacrylate | 1 | 1 | 1,0 |
| C-O single bond | 1 | 1 | 1,0 |
| Acetate | 1 | 1 | 1,0 |
| Secondary amine | 1 | 1 | 1,0 |
| C n single bond | 1 | 1 | 1,0 |
| Amide | 1 | 1 | 1,0 |
| Amine primary | 1 | 1 | 1,0 |
| Ammonium | 1 | 1 | 1,0 |
| Aromatic ring | 1 | 1 | 1,0 |
| Alkyl C-H | 1 | 1 | 1,0 |
| Hydroxyl (O-H) | 1 | 1 | 1,0 |
| Water (H2O) | 1 | 1 | 1,0 |
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 3167 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
-
Water (H2O) usaldusväärsus 1,0
“3 tion of water molecules in the deliquescence process of (cid:3)3400, (cid:3)3272, (cid:3)3167 cm-1 ticles, while the peaks at and particles, including the water monomers adsorbed on NaNO are due to aggregated water molecules absorbed on t”
Lu 等 - 2008 - Molecular events in deliquescence and efflorescenc DOI: 10.1063/1.2973623(cid:5) -
Hydroxyl (O-H) usaldusväärsus 1,0
“3539.8 Weakly H bonded OH vibrations 3487.1 Weakly H bonded OH vibrations 3166.7 Weakly H bonded OH vibrations 1648.3 H-O-H Symmetric bending vibrations 1214.2 PO4 P=O associated stretching vibrations bond, P=O stretching vibrations 1136.7”
Growth and characterization of calcium hydrogen phosphate dihydrate crystals from single diffusion gel technique DOI: 10.1002/crat.200900700 -
Alkyl C-H usaldusväärsus 1,0
“Characteristic IR absorption peaks of pure CTZ of the cm-1), cm-1), aromatic C=C stretch (1589 C=N stretch (1570 matic C-H stretch (3167 cm-1) cm-1) and aromatic C-H bending (761 were present in the spectrum of the CTZ”
Gupta 等 - 2013 - Bioadhesive vaginal tablets containing spray dried DOI: 10.2478/acph-2013-0027 -
usaldusväärsus 1,0
“The bands at 3382, 3358, 3217, 3167 cm-1 are due to N-H stretching of coordinated ammonia.”
Mixed Oxides Derived from Hydrotalcites Mg/Al Activein the Catalytic Transfer Hydrogenation of Furfuralto Furfuryl Alcohol DOI: 10.3390/catal13010045 -
usaldusväärsus 1,0
“new vibrational resonances owing to the formamidinium (FA) cm-1 cm-1 (N-H stretch), 3357 (N-H stretch), cation at 3406 cm-1 cm-1 cm-1 (N-H stretch), 3167 (N-H stretch), and 1714 3271”
Szostak 等 - 2019 - Nanoscale mapping of chemical composition in organ DOI: 10.1126/sciadv.aaw6619 -
Amine primary usaldusväärsus 1,0
“cm(cid:2)1): Lightyellowsolid,Yield:95%,m.p:235-237(cid:4)C,Rf:0.69(Acetone:n3478.58, 3432.99, 3385.93, hexane (7:3)), FTIR (KBr disc, cm(cid:2)1): (C(cid:3)N), (NH2, NH stretch), 3248.52 (Ar CH), 2189.38 1643.38 3339.23 3427.77, 3351.30 (N”
7-Hydroxy-4-phenyl-1, 2-dihydroquinoline derivatives: synthesis via one-pot, three-component reaction and structure elucidation DOI: 10.1016/j.heliyon.2020.e05035
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.