What absorbs at 422 cm⁻¹ in an FTIR spectrum?
A band near 422 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 8 cited sources
Hiter odgovor
A band near 422 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.
Možne dodelitve funkcionalnih skupin
| Funkcionalna skupina | Podporna dejstva | Citirani viri | Najvišje zaupanje |
|---|---|---|---|
| Alkyl C-H | 2 | 2 | 1,0 |
| Aromatic ring | 2 | 2 | 1,0 |
| Carbohydrate | 1 | 1 | 1,0 |
| Hydroxyl (O-H) | 1 | 1 | 1,0 |
| Siloxane (Si-O-Si) | 1 | 1 | 1,0 |
| Silicon-oxygen (Si-O) | 1 | 1 | 1,0 |
| Silicon (Si) | 1 | 1 | 1,0 |
| Metal oxygen | 1 | 1 | 1,0 |
| C c single bond | 1 | 1 | 1,0 |
| Methoxy (OCH3) | 1 | 0 | 1,0 |
| Methacrylate | 1 | 0 | 1,0 |
| C-O single bond | 1 | 0 | 1,0 |
| Acetate | 1 | 0 | 1,0 |
Razvrstitev odraža zbrane literaturne dokaze, ne enega avtoritativnega pravila. Vedno preverite glede na kontekst vašega vzorca.
Možni materiali
| Material | Podporni vrhovi | Prekrivajoče se skupine | Citirani viri |
|---|---|---|---|
| Cellulose | 422, 1735, 1650 | Alkyl C-H, Hydroxyl (O-H), Carbohydrate | 1 |
| ZnO | 422, 1400, 3430 | Hydroxyl (O-H), Alkyl C-H | 1 |
| wood | 422, 1740, 1730 | Carbohydrate, Alkyl C-H, Aromatic ring | 1 |
| polyaniline | 422, 1565, 1570 | Aromatic ring, Alkyl C-H | 1 |
Materiali so prikazani le, ko ista literaturna podlaga podpira ta pas in vsaj en dodatni karakteristični vrh.
Logika spektra
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 422 cm⁻¹ is usually not enough for material identification by itself.
Uporaba v resničnem svetu
Ta vrsta poizvedbe je pogosta pri identifikaciji polimerov, pregledovanju neznanih plastičnih mas, odpravljanju težav pri QC, preverjanju recikliranih materialov in literaturno podprtem pregledu dodelitev vrhov.
Pogoste napake
- Obravnavanje enega izoliranega pasu kot dokaza o materialu brez preverjanja vsaj enega ali dveh podpornih vrhov.
- Ignoriranje prekrivanja: več funkcionalnih skupin lahko prispeva blizu istega valovnega števila.
- Izpuščanje validacije, ko lahko dodatki, mešanice, oksidacija ali kontaminacija popačijo spekter.
Nasvet za preverjanje
Ko ostaja dvoumnost, potrdite hipotezo z DSC, GC-MS ali TGA, zlasti za mešanice, degradirane vzorce in polnjene polimere.
Literatura za temi dodelitvami
-
C c single bond zaupanje 1,0
“The peaks at 3433 is corresponds to N H 738, 584, 509 & 422 cm-1 is for stretching vibration of C C bonds of quiniod rings, stretching vibration 1556 04 14:53 at Laval] [Universite by Downloaded Figure 1.”
Patil 等 - 2011 - Electrical Conductivity of PolyanilineNiZnO3 Comp DOI: 10.1080/00150193.2011.620836 -
Metal oxygen zaupanje 1,0
“LLM confirmed rule peak-group candidate”
Vidhya 等 - 2021 - Anti-cancer applications of Zr, Co, Ni-doped ZnO t DOI: 10.1016/j.matlet.2020.128760 -
Silicon (Si) zaupanje 1,0
“bration of Si(Al)-O, the peaks at 787.56 cm-1 and 761.71 cm-1 are assigned to stretching vibration of Si-Si, the peaks at 744.43 cm-1 and 727.85 cm-1 are assigned to stretching vibration of Si-Al(Si), the peaks at 464.98 cm-1 are assigned t”
Effects and Mechanism of Fe3+ on Flotation Separation of Feldspar and Epidote with Sodium Oleate at Natural pH DOI: 10.3390/separations9050110 -
zaupanje 1,0
“The splitting of the absorption band, which was cm-1, observed in the FTIR spectra of the S1 specimen at 419 to two narrow and weak bands cm-1 cm-1 at 422 and 410 is due to a decrease in the concentration of Ni ions at B-site with Ni2+”
Effects of Zinc Substitution on the Microstructural and Magnetic Characteristics of Cubic Symmetry Nickel Ferrite System DOI: 10.3390/sym15050975 -
zaupanje 1,0
“related to iron according to previous literature [37], but Figure 4(c) shows the spectra of Black tourmaline, in these bandsarenotobserved inAmethystsample.The bands 3920cm-1 which the main bands observed at 422, 467, 545, and 639 at 3787 a”
Ahmad 等 - 2021 - Spectroscopic Analysis for Harnessing the Quality DOI: 10.1155/2021/6629640 -
Aromatic ring zaupanje 1,0
“The UV-vis spectra data for the TPhPyP were obtained in CHCl3 and showed a J ring and the other two doublets to the protons of the phenyl ring at 8.37 ppm with = 8.17 Hz typical electronic spectrum of meso-substituted porphyrin with a sharp”
Synthesis of a New Co Metal–Organic Framework Assembled from 5,10,15,20-Tetrakis((pyridin-4-yl) phenyl)porphyrin “Co-MTPhPyP” and Its Application to the Removal of Heavy Metal Ions DOI: 10.3390/molecules28041816 -
Aromatic ring zaupanje 1,0
“Color changes and alterations in extractives lignin) (lignin, hemitions of methyl and methylene groups in and and main wood components cellulose, and 1,422cm-1 (aromatic C-H celluloses) skeletal vibration in lignin with were examined by spe”
Gaff 等 - 2023 - Impact of thermal modification on color and chemic DOI: 10.1515/rams-2022-0277 -
Alkyl C-H zaupanje 1,0
“Likewise, the absorbance at 1,422 cm-1 cm-1 and 1,426 is associated to C-H bending present in cellulose.”
Shanmugarajah 等 - 2015 - Isolation of NanoCrystalline Cellulose (NCC) from DOI: 10.3303/CET1545285
Imate spekter s tem pasom?
Naložite svoj FTIR spekter in v nekaj sekundah pridobite celotno poročilo o interpretaciji — dodelitve vrhov z literaturnimi citati, ujemanja knjižnice in verigo dokazov z oceno zaupanja.