What absorbs at 1301 cm⁻¹ in an FTIR spectrum?
A band near 1301 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
Snel antwoord
A band near 1301 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.
Mogelijke functionele-groeptoewijzingen
| Functionele groep | Ondersteunende feiten | Geciteerde bronnen | Hoogste vertrouwen |
|---|---|---|---|
| Secondary amine | 7 | 7 | 1,0 |
| C n single bond | 6 | 6 | 1,0 |
| Amide | 6 | 6 | 1,0 |
| Alkyl C-H | 3 | 3 | 1,0 |
| Methoxy (OCH3) | 3 | 3 | 1,0 |
| Methacrylate | 3 | 3 | 1,0 |
| C-O single bond | 3 | 3 | 1,0 |
| Acetate | 3 | 3 | 1,0 |
| N h | 3 | 3 | 1,0 |
| Ketone | 1 | 1 | 1,0 |
| Protein | 1 | 1 | 1,0 |
| Carboxyl (COOH) | 1 | 1 | 1,0 |
| Ammonium | 1 | 1 | 1,0 |
Ranglijst weerspiegelt cumulatief literatuurbewijs, niet één gezaghebbende regel. Bevestig altijd aan de hand van uw monsterecontext.
Mogelijke materialen
| Materiaal | Ondersteunende pieken | Overlappende groepen | Geciteerde bronnen |
|---|---|---|---|
| graphite | 1301, 1640, 1326 | Alkyl C-H | 1 |
| PANI | 1301, 2930, 1300 | Alkyl C-H, Secondary amine, Amide | 1 |
Materialen worden alleen getoond wanneer dezelfde literatuurpool deze band en ten minste één extra karakteristieke piek ondersteunt.
Spectrumlogica
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 1301 cm⁻¹ is usually not enough for material identification by itself.
Gebruik in de praktijk
Dit type query komt vaak voor bij polymeeridentificatie, screening van onbekende kunststoffen, probleemoplossing bij QC, verificatie van gerecycled materiaal en literatuurondersteunde beoordeling van piektoewijzing.
Veelgemaakte fouten
- Het behandelen van een enkele geïsoleerde band als bewijs van een materiaal zonder ten minste een of twee ondersteunende pieken te controleren.
- Overlap negeren: meerdere functionele groepen kunnen bijdragen rond hetzelfde golfgetal.
- Validatie overslaan wanneer additieven, mengsels, oxidatie of verontreiniging het spectrum kunnen verstoren.
Advies voor verificatie
Wanneer dubbelzinnigheid blijft bestaan, valideer de hypothese met DSC, GC-MS of TGA, vooral voor mengsels, gedegradeerde monsters en gevulde polymeren.
Literatuur achter deze toewijzingen
-
Ammonium vertrouwen 1,0
“The band at 1301 sites,32 been assigned to s(NH 3) coordinated to Lewis acid while (cid:228)”
Pena 等 - 2004 - Identification of surface species on titania-suppo DOI: 10.1021/jp0313122 -
vertrouwen 1,0
“confirming (CQN CQC (C-N 0.6Zn 0.4Fe 2O composites that the as-prepared PANI/Ni PANI, 1562 and 1481 and stretching), 1301 4 (N-H C-N stretching),1245 bending and asymmetric stretching of 0.6Zn 0.4Fe 2O particles.”
Controlled synthesis and microwave absorption properties of Ni0.6Zn0.4Fe2O4/PANI composite via an in-situ polymerization process DOI: 10.1016/j.jmmm.2014.10.066 -
Acetate vertrouwen 1,0
“Moreover, a band at 1301 revealed cm-1 C-O stretching, suggesting the possible existence of CaCO 3.”
Assiry 等 - 2023 - Microstructural and Elemental Characterization of DOI: 10.3390/app13074517 -
vertrouwen 1,0
“The aromatic cm-1 cm-1, cm-1, amine and carbon-associated peaks were located at 1629 1301 and 1032 , amine and carbon-associated peaks were located at 1629 cm-1, 1301 cm-1, and 1032 cm-1, which indicates the bending vibrations of the C-H bo”
Chelliah 等 - 2023 - Photocatalytic Organic Contaminant Degradation of DOI: 10.3390/separations10030156 -
vertrouwen 1,0
“Explicitly assigned as D-peak in text.”
Simultaneous Gene Delivery and Tracking through Preparation of Photo-Luminescent Nanoparticles Based on Graphene Quantum Dots and Chimeric Peptides DOI: 10.1038/s41598-017-09890-y -
Amide vertrouwen 1,0
“at about 1737.1 cm(cid:5)1 cm(cid:5)1 C-N attributed to stretching, the bands from 1300.7 1373.1”
Phytochemical screening, polyphenols, flavonoids and tannin content, antioxidant activities and FTIR characterization of Marrubium vulgare L. from 2 different localities of Northeast of Morocco DOI: 10.1016/j.heliyon.2020.e05609 -
Amide vertrouwen 1,0
“The PANI spectrum shows characteristic peaks from benzenoid rings cm-1, N=Q=N 1494 C-N band of an aromatic amine and vibration (Qquinoid ring) at 1301 and”
Kukulski 等 - 2020 - A Polymeric Composite Material (rGOPANI) for Acid DOI: 10.3390/polym12051051 -
Acetate vertrouwen 1,0
“A combination of the characteristics of CH2 1326,1261 C-O stretching Alkyl Ester 1301 CH Carotenoids and COO group vibrations formed the absorption bands at 1500 cm-1, 1476 cm-1, and 1260 2”
Maher 等 - 2021 - Optimization of Ultrasound-Assisted Extraction of DOI: 10.3390/antiox10101612
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