What absorbs at 1340 cm⁻¹ in an FTIR spectrum?
A band near 1340 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
ਸੰਭਾਵਿਤ ਫੰਕਸ਼ਨਲ-ਗਰੁੱਪ ਅਸਾਈਨਮੈਂਟਾਂ
| ਫੰਕਸ਼ਨਲ ਗਰੁੱਪ | ਸਹਾਇਕ ਤੱਥ | ਹਵਾਲਾ ਦਿੱਤੇ ਸਰੋਤ | ਉੱਚ ਵਿਸ਼ਵਾਸ |
|---|---|---|---|
| Alkyl C-H | 12 | 11 | 1.0 |
| Amide | 10 | 10 | 1.0 |
| Secondary amine | 6 | 6 | 1.0 |
| C n single bond | 6 | 6 | 1.0 |
| Protein | 5 | 5 | 1.0 |
| Aromatic ring | 4 | 4 | 1.0 |
| Carboxyl (COOH) | 4 | 4 | 1.0 |
| Methacrylate | 4 | 4 | 1.0 |
| Acetate | 4 | 4 | 1.0 |
| C c single bond | 3 | 3 | 1.0 |
| Hydroxyl (O-H) | 3 | 3 | 1.0 |
| Methoxy (OCH3) | 3 | 3 | 1.0 |
| C-O single bond | 3 | 3 | 1.0 |
| N-O bond | 2 | 2 | 1.0 |
| Carbonate | 2 | 2 | 1.0 |
| Carbohydrate | 1 | 1 | 1.0 |
| Carbon dioxide | 1 | 1 | 1.0 |
| Nitro (NO2) | 1 | 1 | 1.0 |
| Borate | 1 | 1 | 1.0 |
| N h | 1 | 1 | 1.0 |
| Siloxane (Si-O-Si) | 1 | 1 | 1.0 |
| Silicon-oxygen (Si-O) | 1 | 1 | 1.0 |
| Sulfonate | 1 | 1 | 1.0 |
| Ketone | 1 | 1 | 1.0 |
| Ester | 1 | 1 | 1.0 |
| Carbonyl (C=O) | 1 | 1 | 1.0 |
| Fluorine (C-F) | 1 | 1 | 0.9 |
| N eq o | 1 | 1 | 0.9 |
ਰੈਂਕਿੰਗ ਸੰਚਿਤ ਸਾਹਿਤ ਸਬੂਤਾਂ ਨੂੰ ਦਰਸਾਉਂਦੀ ਹੈ, ਇੱਕ ਸਿੰਗਲ ਅਧਿਕਾਰਤ ਨਿਯਮ ਨਹੀਂ। ਹਮੇਸ਼ਾਂ ਆਪਣੇ ਨਮੂਨੇ ਦੇ ਸੰਦਰਭ ਦੇ ਵਿਰੁੱਧ ਪੁਸ਼ਟੀ ਕਰੋ।
ਇਹਨਾਂ ਅਸਾਈਨਮੈਂਟਾਂ ਪਿੱਛੇ ਸਾਹਿਤ
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Carbonate ਵਿਸ਼ਵਾਸ 1.0
“COOcm-1) (Figure 6B), an initial section corresponding to (1636 and 1599 is observed, cm-1 cm-1, followed by a peak at 1340 and 1457 indicative of the presence of CO 3, and a cm-1, peak at 1033 corresponding to the presence of PO groups.”
Remineralization Potential of Three Restorative Glass Ionomer Cements: An In Vitro Study DOI: 10.3390/jcm12062434 -
Amide ਵਿਸ਼ਵਾਸ 1.0
“N=O (NO ) symmetric stretching 1340 2 C-N stretching (aryl) 1180 In plane aromatic C-H deformation”
Synthesis and characterization of Heck-cross coupling 4-(4-nitrostyryl) aniline as potential precursor in Schiff-base synthesis DOI: 10.1063/1.5002293 -
Alkyl C-H ਵਿਸ਼ਵਾਸ 1.0
“The sharp peak at 1340 is attributed to the C-H bending in alkanes and the 1097”
Krishnan 等 - 2020 - Leaf Extract ofDillenia indicaas a Source of Selen DOI: 10.3390/coatings10070626 -
N-O bond ਵਿਸ਼ਵਾਸ 1.0
“the TNT NO bands (1340 and 1546 It is clear from the spectra shown that the peaks intensity of these bands 2 decrease when the concentrations decrease.”
Primera-Pedrozo 等 - 2007 - Detection of 2,4,6-trinitrotoluene on non traditio DOI: 10.1117/12.720405 -
Acetate ਵਿਸ਼ਵਾਸ 1.0
“It shows six major diffraction peaks at cm-1 cm-1 and 1406 corresponds to the band at 1340 31.51, 34.33, 35.98, 47.49, 56.29 and 62.59, which C=O bending vibrations and C=O stretching can be assigned to diffraction from (100), (002),”
Saini 等 - 2013 - Structural and Optical Properties of ZnO Nanoparti DOI: 10.1063/1.4810170 -
Acetate ਵਿਸ਼ਵਾਸ 1.0
“But more broadening is noticed in case cm(cid:3)1) due to its high dielectric of C-O-C stretching (1340 of polymer electrolytes containing PC along with the disconstant as compared to DEC.”
Influence of high and low dielectric constant plasticizers on the ion transport properties of PEO: NH4HF2 polymer electrolytes DOI: 10.1177/0954008319894043 -
Sulfonate ਵਿਸ਼ਵਾਸ 1.0
“It may also be observed that a broadened peak around 1340 cm-1 is present is present in the salt samples which can be attributed to the interactions of the sulfonate in the salt samples which can be a(cid:6)ributed to the interactions of th”
Anis 等 - 2023 - Studies on Polybenzimidazole and Methanesulfonate DOI: 10.3390/polym15132821 -
ਵਿਸ਼ਵਾਸ 1.0
“cm-1 cm-1 cm-1 C-H bending), 910 (silane group), 1070 (Si-O-Si asymmetric stretching), 1340 (aromatic Ccm-1 cm-1 cm-1 (CO2+”
Bahramnia 等 - 2022 - The Effect of 3-(Glycidoloxy Propyl) Trimethoxy Si DOI: 10.21203/rs.3.rs-381518/v1
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ਆਪਣਾ FTIR ਸਪੈਕਟ੍ਰਮ ਅੱਪਲੋਡ ਕਰੋ ਅਤੇ ਸਕਿੰਟਾਂ ਵਿੱਚ ਇੱਕ ਪੂਰੀ ਵਿਆਖਿਆ ਰਿਪੋਰਟ ਪ੍ਰਾਪਤ ਕਰੋ — ਪੀਕ ਅਸਾਈਨਮੈਂਟਾਂ, ਲਾਇਬ੍ਰੇਰੀ ਮੈਚ, ਅਤੇ ਇੱਕ ਵਿਸ਼ਵਾਸ-ਦਰਜਾ ਪ੍ਰਾਪਤ ਸਬੂਤ ਲੜੀ।
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