What absorbs at 882 cm⁻¹ in an FTIR spectrum?
A band near 882 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 882 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 |
|---|---|---|---|
| C c single bond | 3 | 3 | 1,0 |
| Hydroxyl (O-H) | 3 | 3 | 1,0 |
| Phosphate (PO4) | 2 | 2 | 1,0 |
| Metal hydroxyl | 2 | 2 | 1,0 |
| Silicon-oxygen (Si-O) | 2 | 2 | 1,0 |
| Alkyl C-H | 1 | 1 | 1,0 |
| Phosphorus | 1 | 1 | 1,0 |
| Silicon (Si) | 1 | 1 | 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 |
| Siloxane (Si-O-Si) | 1 | 1 | 1,0 |
| Silicon hydride | 1 | 1 | 1,0 |
| Metal oxygen | 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 |
|---|---|---|---|
| silica | 882, 1100, 1080 | Hydroxyl (O-H) | 1 |
| CuO | 882, 453, 1000 | Hydroxyl (O-H) | 1 |
| DNA | 882, 1712, 1660 | Phosphate (PO4) | 1 |
| kaolinite | 882, 3696, 693 | Hydroxyl (O-H), Phosphate (PO4), Metal hydroxyl | 1 |
| quartz | 882, 800, 3053 | Hydroxyl (O-H), Metal hydroxyl | 1 |
| bentonite | 882, 918, 525 | Hydroxyl (O-H), Metal hydroxyl | 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 882 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
“LLM confirmed rule peak-group candidate”
De 等 - 2000 - Hydrolysis-condensation reactions of TEOS in the p DOI: 10.1039/B003221M -
Silicon hydride zaupanje 1,0
“the band of 1108 corresponding to Sicm-1 O-Si (asymmetric stretching of interstitial oxygen in Si) and absorption peaks at 882 and 2245 cm-1 corresponding to O 3-SiH bending and stretching mode [4, 6, 12, 18, 19, 32].”
REVERSIBLE QUENCHING OF PHOTOLUMINESCENCE IN STAIN ETCHED POROUS SILICON AT HNO3 POSTTREATMENT AND ROLE OF OXYGEN BONDS DOI: 10.1016/j.jlumin.2017.11.011 -
Metal hydroxyl zaupanje 1,0
“Sagadevan [84] connected the Cu-OH vibration to the 882 cm-1 peak, which proved the cm-1 connected the Cu-OH vibration to the 882 peak, which proved the successful prepasuccessful preparation of rGO/CuO nanocomposites in agreement with [85-”
Effect of rGO wt.% on the Preparation of rGO/CuO Nanocomposites at Different Test Periods and Temperatures DOI: 10.3390/cryst12101325 -
C c single bond zaupanje 1,0
“(%) cm-1 The peaks at 882 and 1015 were due to the asymTransmittance metric tensile vibrations of C-C and C-O-C bands of”
Optimization of food-grade medium for co-production of bioactive substances by Lactobacillus acidophilus LA-5 for explaining pharmabiotic mechanisms of probiotic DOI: 10.1007/s13197-020-04894-5 -
Silicon (Si) zaupanje 1,0
“The 1038 cm-1is assigned to stretching vibrations of Si-O, and bands at 918 cm-1 and 882 cm-1 cm-1”
Khodosova 等 - 2022 - Magnetic Nanosorbents Based on Bentonite and CoFe2 DOI: 10.3390/min12111474 -
Phosphate (PO4) zaupanje 1,0
“2cm-1 asymmetric and symmetric vibration at 1237 to 1236 and 1098 to Minor variation in PO cm-1, cm-1 cm-1 1094 infrared B-marker bands at 882 (sugar-phosphate stretch) and 817 (phospho-diester”
Astragalin from Cassia alata Induces DNA Adducts in Vitro and Repairable DNA Damage in the Yeast Saccharomyces cerevisiae DOI: 10.3390/ijms13032846 -
Alkyl C-H zaupanje 1,0
“and, 882 cm-1 and 860 cm-1 represent CH rocking and C-C stretching, 2”
Verma 等 - 2021 - Chelating Ligands as Electrolyte Solvent for Recha DOI: 10.1021/acs.chemmater.0c04358 -
Phosphate (PO4) zaupanje 1,0
“cm-1 cm-1 cm-1 The peaks at 385 and 420 are related lower Raman peaks at 882 and 1150 correspond to HPO”
Fabrication and Characterisation of Two-Layered Synthetic Titanium-Chitosan Bone Scaffolds DOI: 10.1007/978-3-030-92381-5_73
Imate spekter s tem pasom?
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