What absorbs at 1359 cm⁻¹ in an FTIR spectrum?
A band near 1359 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
Risposta rapida
A band near 1359 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.
Possibili assegnazioni di gruppi funzionali
| Gruppo funzionale | Fatti di supporto | Fonti citate | Affidabilità massima |
|---|---|---|---|
| Alkyl C-H | 5 | 5 | 1,0 |
| Secondary amine | 3 | 3 | 1,0 |
| C n single bond | 3 | 3 | 1,0 |
| Amide | 3 | 3 | 1,0 |
| Ring structure | 2 | 2 | 1,0 |
| Carbonyl (C=O) | 2 | 2 | 1,0 |
| Hydroxyl (O-H) | 2 | 2 | 1,0 |
| Carboxyl (COOH) | 2 | 2 | 1,0 |
| Nitrogen heterocycle | 1 | 1 | 1,0 |
| Lipid | 1 | 1 | 1,0 |
| Ester | 1 | 1 | 1,0 |
| Water (H2O) | 1 | 1 | 1,0 |
| C c single bond | 1 | 1 | 1,0 |
| Nucleic acid | 1 | 1 | 1,0 |
| Nitrate | 1 | 1 | 1,0 |
| Amine primary | 1 | 1 | 1,0 |
| N h | 1 | 1 | 1,0 |
La classifica riflette le prove bibliografiche accumulate, non una singola regola autorevole. Conferma sempre nel contesto del tuo campione.
Materiali possibili
| Materiale | Picchi di supporto | Gruppi sovrapposti | Fonti citate |
|---|---|---|---|
| chitosan | 1359, 1650, 1655 | Alkyl C-H, Amide | 1 |
| ZnO NPs | 1359, 1664, 875 | Alkyl C-H, Amide | 1 |
| hydroxyapatite | 1359, 1620, 1639 | Alkyl C-H, Amide | 1 |
| polyethylene glycol | 1359, 1030, 1587 | Alkyl C-H, Amide | 1 |
I materiali vengono mostrati solo quando lo stesso pool di letteratura supporta questa banda e almeno un picco caratteristico aggiuntivo.
Logica dello spettro
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 1359 cm⁻¹ is usually not enough for material identification by itself.
Utilizzo nel mondo reale
Questo tipo di richiesta è comune nell＇identificazione dei polimeri, nello screening di plastiche sconosciute, nella risoluzione dei problemi di controllo qualità, nella verifica dei materiali riciclati e nella revisione dell＇assegnazione dei picchi supportata dalla letteratura.
Errori comuni
- Trattare una banda isolata come prova di un materiale senza verificare almeno uno o due picchi di supporto.
- Ignorando la sovrapposizione: più gruppi funzionali possono contribuire vicino allo stesso numero d＇onda.
- Saltare la convalida quando additivi, miscele, ossidazione o contaminazione possono distorcere lo spettro.
Consiglio di verifica
Quando permangono ambiguità, convalida l＇ipotesi con DSC, GC-MS o TGA, specialmente per miscele, campioni degradati e polimeri caricati.
Letteratura dietro queste assegnazioni
-
affidabilità 1,0
“cm-1 cm-1 1652 corresponds to vibration of carbonyl bond (amide I) while peak at 1579 corresponds to N-H bending of primary amine probably overlapped by N-H bending (amide II) cm-1 cm-1 of typical O=C-NHR groups and peak at 1359 and 1318 fo”
Jaiswal 和 Dhayal - 2020 - Preparation of 2D coatings of functionally graded DOI: 10.1016/j.matchemphys.2020.122663 -
Nitrate affidabilità 1,0
“cm-1 stretching vibrations of bands at 1359.2 and 836 planes respectively displayed a typical XRD pattern of (- band was recorded due to the stretching vibration of nitrate ZnONPs (Fig.”
Biomedical Applications of Biogenic Zinc Oxide Nanoparticles Manufactured from Leaf Extracts of Calotropis gigantea (L.) Dryand. DOI: 10.1007/s12668-020-00746-w -
Alkyl C-H affidabilità 1,0
“In the case of pure PEO, for the distinctive peaks between 800-1400 cm-1 in the spectrum, the stretching vibration peak of C-O-C splits into three peaks at 1146, 1110, and 1062 cm-1, and the two bands appeared at 1344, and 1359 cm-1 can be”
Preparation and Composition Optimization of PEO:MC Polymer Blend Films to Enhance Electrical Conductivity DOI: 10.3390/polym11050853 -
Alkyl C-H affidabilità 1,0
“Then, a band is observed at 1358.66cm-1 corresponding to the deformation of the CH”
Cardenas-Trivino 等 - 2019 - Synthesis and Properties of Bionanocomposites of P DOI: 10.1155/2019/4520927 -
Nucleic acid affidabilità 1,0
“Raman spectrum vibrations from cm-1, cm-1, cm-1), cm-1), cm-1), nucleic acid (812 1065 1293 proline and hydroxyproline (890 tryptophan (1359 cm-1, cm-1), cm-1),”
Depciuch 等 - 2021 - Spectroscopic evaluation of carcinogenesis in endo DOI: 10.1038/s41598-021-88640-7 -
Carboxyl (COOH) affidabilità 1,0
“symmetric stretching vibration ) of the group-appeared at 1566 and 1359 symmetric stretching vibration (Vs COO-) of the -COOgroup-appeared at 1566 cm-1 and 1359 cm-1, separately [53].”
Mechanism and Improved Dissolution of Glycyrrhetinic Acid Solid Dispersion by Alkalizers DOI: 10.3390/pharmaceutics12010082 -
Hydroxyl (O-H) affidabilità 1,0
“Bands located at 1359 and 1345 represent 2 cm-1, cm-1, cm-1, in-plane O-H deformation, whereas bands centered at 1280 959 840 and cm-1”
Synthesis and Characterization of Polymer-Based Coatings Modified with Bioactive Ceramic and Bovine Serum Albumin DOI: 10.3390/jfb12020021 -
Amide affidabilità 1,0
“1513 N-H bending 1458, 1440 C=N and CH=CH (stretch) C-N+ polarons (stretch) 1359 1255”
Kulandaivalu 等 - 2016 - Influence of Monomer Concentration on the Morpholo DOI: 10.1155/2016/8518293
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