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
Snabbt svar
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.
Möjliga identifieringar av funktionella grupper
| Funktionell grupp | Stödjande fakta | Citerade källor | Högsta förtroende |
|---|---|---|---|
| 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 |
Rankingen speglar ackumulerade litteraturbevis, inte en enda auktoritativ regel. Bekräfta alltid mot din provkontext.
Möjliga material
| Material | Stödjande toppar | Överlappande grupper | Citerade källor |
|---|---|---|---|
| graphite | 1301, 1640, 1326 | Alkyl C-H | 1 |
| PANI | 1301, 2930, 1300 | Alkyl C-H, Secondary amine, Amide | 1 |
Material visas endast när samma litteraturpool stöder detta band och minst en ytterligare karakteristisk topp.
Spektrumlogik
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.
Användning i verkligheten
Denna typ av fråga är vanlig inom polymeridentifiering, screening av okänd plast, felsökning av kvalitetskontroll, verifiering av återvunnet material och litteraturstödd toppidentifieringsgranskning.
Vanliga misstag
- Behandla ett isolerat band som bevis på ett material utan att kontrollera minst en eller två stödjande toppar.
- Ignorerar överlapp: flera funktionella grupper kan bidra nära samma vågtal.
- Hoppa över validering när tillsatser, blandningar, oxidation eller föroreningar kan förvränga spektrat.
Verifieringsråd
När oklarhet kvarstår, validera hypotesen med DSC, GC-MS eller TGA, särskilt för blandningar, nedbrutna prover och fyllda polymerer.
Litteratur bakom dessa identifieringar
-
Ammonium förtroende 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 -
förtroende 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 förtroende 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 -
förtroende 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 -
förtroende 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 förtroende 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 förtroende 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 förtroende 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
Har du ett spektrum med detta band?
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