What absorbs at 415 cm⁻¹ in an FTIR spectrum?
A band near 415 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
Quick answer
A band near 415 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.
Möjliga identifieringar av funktionella grupper
| Funktionell grupp | Stödjande fakta | Citerade källor | Högsta förtroende |
|---|---|---|---|
| N h | 1 | 1 | 1,0 |
| Alkyl C-H | 1 | 1 | 1,0 |
| Metal oxygen | 1 | 1 | 1,0 |
| Phosphate (PO4) | 1 | 1 | 0,8 |
| Borate | 1 | 1 | 0,8 |
Rankingen speglar ackumulerade litteraturbevis, inte en enda auktoritativ regel. Bekräfta alltid mot din provkontext.
Possible materials
| Material | Stödjande toppar | Overlapping groups | Citerade källor |
|---|---|---|---|
| ZnO NPs | 415, 1664, 875 | Alkyl C-H, Metal oxygen, N h | 1 |
Materials are shown only when the same literature pool supports this band and at least one additional characteristic peak.
Spectrum logic
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 415 cm⁻¹ is usually not enough for material identification by itself.
Real-world usage
This type of query is common in polymer identification, unknown plastic screening, QC troubleshooting, recycled-material verification, and literature-backed peak assignment review.
Common mistakes
- Treating one isolated band as proof of a material without checking at least one or two supporting peaks.
- Ignoring overlap: multiple functional groups can contribute near the same wavenumber.
- Skipping validation when additives, blends, oxidation, or contamination may distort the spectrum.
Verification advice
When ambiguity remains, validate the hypothesis with DSC, GC-MS, or TGA, especially for blends, degraded samples, and filled polymers.
Litteratur bakom dessa identifieringar
-
Metal oxygen förtroende 1,0
“Absorption at 415 stretching frequency of Zn-O bonds confirms the presence of M-O vibrational band.”
Vindhya 等 - 2019 - Dielectric properties of Zinc Oxide Nanoparticles DOI: 10.1063/1.5093888 -
Alkyl C-H förtroende 1,0
“CH and CH stretching, 3 2 cm-1 415 (Rohman & Che Man, 2012).”
Lefroy 等 - 2021 - A natural, cellulose-based microgel for water-in-o DOI: 10.1016/j.foodhyd.2020.106408 -
förtroende 1,0
“Also, 414 cm-1 the wide absorption band at 3600-3100 was attributed to O-H and N-H vibration stretching 415 [34-5].”
Rasul 等 - 2022 - Development of antimicrobialantioxidant nanocompo DOI: 10.21203/rs.3.rs-337479/v1 -
Borate förtroende 0,8
“Characteristic peaks for B-O, P-O, B-H vibration modes.”
Dalui 等 - 2008 - Boron phosphide films prepared by co-evaporation t DOI: 10.1016/j.tsf.2007.09.047
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