What absorbs at 3060 cm⁻¹ in an FTIR spectrum?
A band near 3060 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
Jawapan pantas
A band near 3060 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.
Penetapan kumpulan berfungsi yang mungkin
| Kumpulan berfungsi | Fakta sokongan | Sumber dipetik | Keyakinan tertinggi |
|---|---|---|---|
| Alkyl C-H | 17 | 15 | 1.0 |
| Aromatic ring | 9 | 7 | 1.0 |
| N h | 4 | 4 | 1.0 |
| Secondary amine | 3 | 3 | 1.0 |
| Amide | 3 | 3 | 1.0 |
| Alkene (C=C) | 3 | 3 | 1.0 |
| Carboxyl (COOH) | 3 | 3 | 1.0 |
| Hydrogen bond | 2 | 2 | 1.0 |
| Hydroxyl (O-H) | 2 | 2 | 1.0 |
| Methacrylate | 2 | 2 | 1.0 |
| Ketone | 2 | 2 | 1.0 |
| Ester | 2 | 2 | 1.0 |
| Carbonyl (C=O) | 2 | 2 | 1.0 |
| Acetate | 2 | 2 | 1.0 |
| Ring structure | 2 | 1 | 1.0 |
| C n single bond | 1 | 1 | 1.0 |
| Amine primary | 1 | 1 | 1.0 |
| Oxygen heterocycle | 1 | 1 | 1.0 |
| Metal oxygen | 1 | 1 | 1.0 |
Pemeringkatan mencerminkan bukti literatur terkumpul, bukan satu peraturan berwibawa. Sentiasa sahkan terhadap konteks sampel anda.
Bahan yang mungkin
| Bahan | Puncak sokongan | Kumpulan bertindih | Sumber dipetik |
|---|---|---|---|
| polystyrene | 3060, 1020, 1600 | Aromatic ring, Alkyl C-H | 1 |
| microplastics | 3060, 1643, 1614 | Alkyl C-H, Aromatic ring | 1 |
Bahan hanya dipaparkan apabila kumpulan literatur yang sama menyokong jalur ini dan sekurang-kurangnya satu puncak ciri tambahan.
Logik spektrum
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 3060 cm⁻¹ is usually not enough for material identification by itself.
Penggunaan dunia sebenar
Jenis pertanyaan ini biasa dalam pengenalpastian polimer, saringan plastik tidak diketahui, penyelesaian masalah QC, pengesahan bahan kitar semula, dan semakan tugasan puncak yang disokong oleh literatur.
Kesilapan biasa
- Menganggap satu jalur terpencil sebagai bukti bahan tanpa memeriksa sekurang-kurangnya satu atau dua puncak sokongan.
- Mengabaikan pertindihan: pelbagai kumpulan berfungsi boleh menyumbang berhampiran nombor gelombang yang sama.
- Melangkau pengesahan apabila bahan tambahan, campuran, pengoksidaan, atau pencemaran boleh memesongkan spektrum.
Nasihat pengesahan
Apabila kekaburan masih ada, sahkan hipotesis dengan DSC, GC-MS, atau TGA, terutamanya untuk campuran, sampel terdegradasi, dan polimer terisi.
Literatur di sebalik penetapan ini
-
Aromatic ring keyakinan 1.0
“Finally, the PS was characterized by absorption bands at 3060, 3026 (-CH aromatic stretching vibrations), 1600, 1492, and 1452 (-C=C aromatic stretching), indicating the Polymers2023,15,911”
Campanale 等 - 2023 - Fourier Transform Infrared Spectroscopy to Assess DOI: 10.3390/polym15040911 -
Aromatic ring keyakinan 1.0
“(cm(cid:3)1) Assignment Reference Peak at CAH 3060 and 3026 Aromatic stretching Mark and Bikales (1987) CAH 2923 and 2852 Aliphatic stretching”
Galgali 等 - 2007 - Sugar-linked biodegradable polymers Regio-specifi DOI: 10.1016/j.carbpol.2006.06.035 -
Hydrogen bond keyakinan 1.0
“overtone of strong bands near The wide band at of the five deuteron groups, bound with hydrogen bonds, 3060cm-1 3048cm-1 ca.”
Rozenberg 等 - 2005 - Low-temperature FTIR spectra and hydrogen bonds in DOI: 10.1016/j.saa.2004.05.024 -
Aromatic ring keyakinan 1.0
“3), whereas it appears to be CAH 2930cm(cid:2)1 in methyl-substituted PAH spectra the main aromatic stretching peak varies in 3060shifted at about 3040cm(cid:2)1 stretching peak of alrange in dependence on the aromatic species.”
Infrared spectroscopy of some carbon-based materials relevant in combustion: Qualitative and quantitative analysis of hydrogen DOI: 10.1016/j.carbon.2014.03.014 -
Alkyl C-H keyakinan 1.0
“2002, 324, C-H cm-1 is also observable in the stretch region at about 3060 (8) Edman, K.;”
Sudo 等 - 2005 - Steric constraint in the primary photoproduct of a DOI: 10.1021/ja056203aCCC -
N h keyakinan 1.0
“The FTIR of LX (pure drug) shown intense bands at 3060 cm-1, 1647 cm-1, 1590 cm-1, cm-1, cm-1 1590 1323 and 783 corresponding to the functional groups NH, C=O, cm-1, 1323 cm-1, and 783 cm-1 corresponding to the functional groups NH, C=O, CO”
Almotairi 等 - 2022 - Design and Optimization of Lornoxicam Dispersible DOI: 10.3390/ph15121463 -
Aromatic ring keyakinan 1.0
“For pyrolyzed cm-1, 29 biochar the important stretching vibrations are the O-H at 3400 the aliphatic C-H stretch cm-1, cm-1, 30 between 3000-2860 the aromatic C-H stretch at 3060 the carboxyl (C=O) stretch at cm-1,”
Cibati 等 - 2017 - Assessment of Miscanthus x giganteus derived bioch DOI: 10.1016/j.jclepro.2017.06.114 -
Alkyl C-H keyakinan 1.0
“In Raman spectra, C-H stretching vibration was assigned at 3060 The stretching”
Density Functional Theory and Molecular Docking Investigations of the Chemical and Antibacterial Activities for 1-(4-Hydroxyphenyl)-3-phenylprop-2-en-1-one DOI: 10.3390/molecules26123631
Ada spektrum dengan jalur ini?
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