What absorbs at 954 cm⁻¹ in an FTIR spectrum?
A band near 954 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 954 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 |
|---|---|---|---|
| Alkyl C-H | 5 | 4 | 1,0 |
| Hydroxyl (O-H) | 3 | 3 | 1,0 |
| Silicon-oxygen (Si-O) | 3 | 3 | 1,0 |
| Methoxy (OCH3) | 3 | 2 | 1,0 |
| Methacrylate | 3 | 2 | 1,0 |
| Acetate | 3 | 2 | 1,0 |
| Silanol (Si-OH) | 2 | 2 | 1,0 |
| Silicon (Si) | 2 | 2 | 1,0 |
| C c single bond | 2 | 2 | 1,0 |
| C-O single bond | 2 | 1 | 1,0 |
| Ring structure | 1 | 1 | 1,0 |
| Methyl | 1 | 1 | 1,0 |
| Siloxane (Si-O-Si) | 1 | 1 | 1,0 |
| N h | 1 | 1 | 1,0 |
| Silicon carbon | 1 | 1 | 1,0 |
| Alkene (C=C) | 1 | 0 | 1,0 |
| Aromatic ring | 1 | 0 | 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 |
|---|---|---|---|
| PMMA | 954, 1722, 1383 | Alkyl C-H, Methoxy (OCH3) | 1 |
| SiC | 954, 791, 805 | Silicon-oxygen (Si-O), Alkyl C-H | 1 |
| magnetite | 954, 1740, 1263 | Hydroxyl (O-H), Silicon-oxygen (Si-O), Methoxy (OCH3) | 1 |
| PVC | 954, 834, 1195 | Alkyl C-H, Methoxy (OCH3), Hydroxyl (O-H) | 1 |
| CS | 954, 1645, 1720 | Hydroxyl (O-H), Alkyl C-H, Methoxy (OCH3) | 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 954 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
-
Silicon carbon pārliecība 1,0
“The narrow TO feature (TO) mode (Si-C stretching vibration) and a shoulder at 954”
Baek 等 - 2006 - Structural characterization of beta-SiC nanowires DOI: 10.1016/j.msec.2005.09.083 -
Alkyl C-H pārliecība 1,0
“cm-1) cm-1), cm-1).9, 10 CH stretching (954 and C-C vibration (868 -CHbending (754 and 1383 cm-1 The peak at 872 observed in all samples which is due to C-C stretching and featured for cm-1 amorphous properties of films.”
Ghosh 等 - 2020 - Blown films fabrication of poly lactic acid based DOI: 10.1016/j.mtcomm.2019.100737 -
Alkyl C-H pārliecība 1,0
“cm-1 cm-1, cm-1 stretching), peaks corresponding to Ca-Halogen, 767 (Ca-O-bond 809 897 cm-1 (stretching-vibration peaks corresponding to C-H-, C-C-, and Ca-O-Ca bonding), 954 cm-1 cm-1, (representing the OH of alcohol), 1195 (for the amine”
Antibacterial and Antibiofilm Activity of Ficus carica-Mediated Calcium Oxide (CaONPs) Phyto-Nanoparticles DOI: 10.3390/molecules28145553 -
pārliecība 1,0
“The ATR-IR tellite peak (954.39 eV), which are attributed to Cu 2p 3/2 and Cu cm(cid:1)1 spectral analysis indicates that a new peak located at 800”
Evidence on the 2-nitrophenyl octyl ether (NPOE) facilitating Copper(II) transport through polymer inclusion membranes DOI: 10.1016/j.memsci.2015.12.013 -
pārliecība 1,0
“The spectra show bands centered at 567, 794.5, and 1049.1 with a cm-1 shoulder peak at 1162.9 corresponding to stretching vibrations of siloxane groups cm-1 (Si-O-Si bonds), respectively [41], while the peak centered at 954.5 corresponds”
CO Oxidation Efficiency and Hysteresis Behavior over Mesoporous Pd/SiO2 Catalyst DOI: 10.3390/catal -
Acetate pārliecība 1,0
“The vibrational peak at 954 corresponds to the C-O stretching vibration,”
Arya 和 Sharma - 2018 - Effect of salt concentration on dielectric propert DOI: 10.1007/s10008-018-3965-4. -
pārliecība 1,0
“Bands at 954 cm-1 are characteristics for Si-O vibration of beryl and bands at 1014 cm-1 are characterize for internal Si-O stretching vibration while bands at 1171-1203 cm-1 are characteristics for Be-O vibration and Si-O”
Fawzy - 2021 - Separation of fine beryl from quartz via magnetic DOI: 10.37190/ppmp/132329 -
Alkyl C-H pārliecība 1,0
“cm-1 cm-1 Band 954 is a doublet with 965 and is NMR Mouse: diffusion of solvents and relaxation behaviour assigned to the α-methyl (α-CH 3) attached to the main New and aged controls chain [49, 72].”
Effects of selected solvents on PMMA after prolonged exposure: unilateral NMR and ATR-FTIR investigations DOI: 10.1186/s40494-023-00881-z
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