What absorbs at 455 cm⁻¹ in an FTIR spectrum?
A band near 455 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
Quick answer
A band near 455 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.
Iespējamie funkcionālo grupu piešķīrumi
| Funkcionālā grupa | Atbalstošie fakti | Citētie avoti | Augstākā pārliecība |
|---|---|---|---|
| Metal oxygen | 6 | 6 | 1,0 |
| Silicon-oxygen (Si-O) | 3 | 3 | 1,0 |
| Siloxane (Si-O-Si) | 2 | 2 | 1,0 |
| Hydroxyl (O-H) | 1 | 1 | 1,0 |
| N h | 1 | 1 | 1,0 |
| Secondary amine | 1 | 1 | 1,0 |
| C n single bond | 1 | 1 | 1,0 |
| Amide | 1 | 1 | 1,0 |
| Carbon dioxide | 1 | 1 | 1,0 |
Rangs atspoguļo uzkrātos literatūras pierādījumus, nevis vienu autoritatīvu noteikumu. Vienmēr apstipriniet atbilstoši parauga kontekstam.
Possible materials
| Materiāls | Atbalstošie pīķi | Overlapping groups | Citētie avoti |
|---|---|---|---|
| TiO2 | 455, 1700, 1093 | Metal oxygen, Hydroxyl (O-H) | 1 |
| TiO2 nanoparticles | 455, 1700, 1535 | Hydroxyl (O-H), Metal oxygen | 1 |
| silica | 455, 1100, 1080 | Silicon-oxygen (Si-O), Hydroxyl (O-H), Siloxane (Si-O-Si) | 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 455 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.
Literatūra aiz šiem piešķīrumiem
-
pārliecība 1,0
“2 30 eV.36 to give rise to a peak at 455 A significant band ascribed to a Ti-O-C bond was observed at 31 32”
Surface Grafting of Ru(II) Diazonium-Based Sensitizers on Metal Oxides Enhances Alkaline Stability for Solar Energy Conversion DOI: 10.1021/acsami.7b16641 -
Metal oxygen pārliecība 1,0
“assigned to apical oxygen vibrations”
Khan 等 - 2004 - Effects of post-annealing on the infrared active p DOI: 10.1016/j.physc.2004.04.029 -
pārliecība 1,0
“The disordered natureof the rutile lattice and the signalwith ag value of 1.98 inthe ESR spectrum of SnO fluoride enormous oxygen vacancies created due to ion doping were evident from the broad bands observed at 455, 588, and cm(cid:1)1”
Kumar 等 - 2011 - Optical and Photocatalytic Properties of Heavily F DOI: 10.1021/ic2003436 -
Silicon-oxygen (Si-O) pārliecība 1,0
“The pumice XRD pattern coated with and ZrO nanoparticles shows the main and derivative elements of TiO 2 2 pumice, including pyroxene, magnetite feldspar mica, and SiO 2.FTIR spectra for TiO and ZrO nanoparticles showed that the peaks at 45”
Efficiency of the catalytic ozonation processes using nanoparticles deposited on pumice in the remov DOI: 10.1080/03067319.2021.1903453 -
Metal oxygen pārliecība 1,0
“LLM confirmed rule peak-group candidate”
Wang 等 - 2018 - Coloration and Decoloration of Textiles Using a Ti DOI: 10.1007/s12221-018-1134-0 -
Hydroxyl (O-H) pārliecība 1,0
“Fritsch et al.: OH stretching vibrations in serpentines 455 2M 3.2.2 OH stretching modes in antigorite inner OH in an Mg environment.”
Fritsch 等 - 2021 - Structural, textural, and chemical controls on the DOI: 10.5194/ejm-33-447-2021 -
pārliecība 1,0
“The low frequency contributions (~455 cm-1) (~455 and ~800 are bending modes of the Si-O bonds, whereas the high-intensity and ~800 cm-1) are bending modes of the Si-O bonds, whereas the high-intensity band at and ~800 cm-1) are bending mod”
Len 等 - 2021 - Physicochemical Characterization and Drug Release DOI: 10.3390/ijms22179197 -
Metal oxygen pārliecība 1,0
“4 cm-1 widening in the 1150-1000 region due to overlapping of stretching vibrations of spectively), 576 cm-1 (vibrations of double-ring external linkage), and 455 cm-1 (bending functional Si/Al-O and stretching vibrations of C-C/C-O-C pecti”
Novel Biocomposite Films Based on High Methoxyl Pectin Reinforced with Zeolite Y for Food Packaging Applications DOI: 10.3390/foods11030360
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