What absorbs at 1516 cm⁻¹ in an FTIR spectrum?
A band near 1516 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
Πιθανές αντιστοιχίσεις λειτουργικών ομάδων
| Λειτουργική ομάδα | Υποστηρικτικά δεδομένα | Αναφερόμενες πηγές | Κορυφαία εμπιστοσύνη |
|---|---|---|---|
| Amide | 8 | 7 | 1,0 |
| Aromatic ring | 5 | 5 | 1,0 |
| C c single bond | 3 | 3 | 1,0 |
| Ring structure | 3 | 3 | 1,0 |
| Amino acid | 3 | 3 | 1,0 |
| Hydroxyl (O-H) | 2 | 2 | 1,0 |
| Methacrylate | 2 | 2 | 1,0 |
| Acetate | 2 | 2 | 1,0 |
| Carboxyl (COOH) | 2 | 2 | 1,0 |
| Carbonyl (C=O) | 2 | 2 | 1,0 |
| Alkyl C-H | 2 | 2 | 1,0 |
| Carbohydrate | 2 | 2 | 1,0 |
| Sulfur heterocycle | 1 | 1 | 1,0 |
| C=n | 1 | 1 | 1,0 |
| Methoxy (OCH3) | 1 | 1 | 1,0 |
| C-O single bond | 1 | 1 | 1,0 |
| Alkene (C=C) | 1 | 1 | 1,0 |
| Secondary amine | 1 | 1 | 1,0 |
| C n single bond | 1 | 1 | 1,0 |
| N-O bond | 1 | 1 | 1,0 |
| Lignin | 1 | 1 | 1,0 |
| Ketone | 1 | 1 | 1,0 |
| Ester | 1 | 1 | 1,0 |
| Protein beta sheet | 1 | 1 | 0,8 |
Η κατάταξη αντικατοπτρίζει τα συσσωρευμένα βιβλιογραφικά στοιχεία, όχι έναν ενιαίο έγκυρο κανόνα. Πάντα να επιβεβαιώνετε με βάση το πλαίσιο του δείγματός σας.
Βιβλιογραφία πίσω από αυτές τις αντιστοιχίσεις
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Acetate εμπιστοσύνη 1,0
“Lignin 1637.56 1653.00 1658.78 [6] (unconjugated) C=O stretching Lignin 1516.05 1514.12 1514.12 [6]”
Firsoni 等 - 2019 - Fiber Content and Relative Feed Value Estimation o DOI: 10.1088/1757-899X/546/4/042008 -
C c single bond εμπιστοσύνη 1,0
“C_C ring stretching at 1516 The FT-IR spectrums of ferulic 3.4.Apparentviscosity acid-graftedwater-solublecurdlanconjugatesalsoappearednewchar-”
Catechin-grafted arabinoxylan conjugate: Preparation, structural characterization and property investigation DOI: 10.1016/j.ijbiomac.2021.03.190 -
Aromatic ring εμπιστοσύνη 1,0
“The presence of a positive-going band at 1516 reveals CAC the vanishing of aromatic vibrations at 1.0 V in PANI (the referencespectrumwasacquiredpreviouslyat0.1V).Theactivationofthis vibrational mode under s-polarized radiation is associate”
Revisiting the Redox Transitions of Polyaniline. Semiquantitative Interpretation of Electrochemically Induced IR Bands DOI: 10.1016/j.jelechem.2021.115593 -
Lignin εμπιστοσύνη 1,0
“In regard to the peak at 1516 cm-1, which has been previously assigned to lignin according to Lahlali et al.”
Specific Mycoparasite-Fusarium Graminearum Molecular Signatures in Germinating Seeds Disabled Fusarium Head Blight Pathogen’s Infection DOI: 10.3390/ijms22052461 -
Carbohydrate εμπιστοσύνη 1,0
“Therefore, selection based on other related (1737.8, 1267.2, and 969.2 proteins (1688.6 and cm-1), characters such as FHB severity or percent scabby seed 1544.9 cellulose vibrations (1516, 1463.9, 1374.2, cm-1), has been proposed [7,59].”
Synchrotron based phase contrast X-ray imaging combined with FTIR spectroscopy reveals structural and biomolecular differences in spikelets play a significant role in resistance to Fusarium in wheat DOI: 10.1186/s12870-014-0357-5 -
Ring structure εμπιστοσύνη 1,0
“1708 peak became far less prominent in the D 2O A strong produces a sharp peak/trough at 1533/1522 cm-1 sample, consistent with a shift downward by around 4 ring-bending mode of free tyrosine occurs in water at 1516 cm-1 and/or a decrease o”
Rich 和 Breton - 2001 - FTIR studies of the CO and cyanide adducts of full DOI: 10.1021/bi0027332 -
Amino acid εμπιστοσύνη 1,0
“cm-1, cm-1 cm-1), 1634-1635 1594-1598 1652 and amide II cm-1), cm-1), (1547-1548 peaks the tyrosine peak (1516 the Karolinska”
Shi 等 - 2018 - Biochemical alterations of Candida albicans during DOI: 10.1039/c8an01452c -
Hydroxyl (O-H) εμπιστοσύνη 1,0
“modern and sub-fossil spectra, (iv) indicates the UAC peak region at 1516 and (v) the O-H peaks around 3,300 cm-1, the hydroxyl OH peak at ~3,300 and we also observe increases Similarly, there was a relatively small distance between KOH-tre”
Influence of common palynological extraction treatments on ultraviolet absorbing compounds (UACs) in sub-fossil pollen and spores observed in FTIR spectra DOI: 10.3389/fevo.2023.1096099
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