What absorbs at 1351 cm⁻¹ in an FTIR spectrum?
A band near 1351 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 1351 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 |
|---|---|---|---|
| N-O bond | 3 | 3 | 1.0 |
| Alkyl C-H | 1 | 1 | 1.0 |
| Carboxyl (COOH) | 1 | 1 | 1.0 |
| C-O single bond | 1 | 1 | 0.9 |
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 |
|---|---|---|---|
| GO | 1351, 1720, 1182 | C-O single bond, Alkyl C-H, Carboxyl (COOH) | 1 |
| biodiesel | 1351, 858, 3470 | Alkyl C-H, C-O single bond | 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 1351 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
-
N-O bond keyakinan 1.0
“LLM confirmed rule peak-group candidate”
Primera-Pedrozo 等 - 2007 - Detection of 2,4,6-trinitrotoluene on non traditio DOI: 10.1117/12.720405 -
Carboxyl (COOH) keyakinan 1.0
“In addition, the current deintensity remains similar compared with the much higher incay during the 10 min steps was more pronounced for this tensity of the superimposed formate band at 1351 cm-1.”
Cychy 等 - 2021 - Optimizing the nickel boride layer thickness in a DOI: 10.1016/S1872-2067(20)63766-4 -
N-O bond keyakinan 1.0
“cm´1 cm´1 The bands located at 1351 and 858.17 are associated with the N-O stretching vibration and The bands located at 1351 cm-1 and 858.17 cm-1 are associated with the N-O stretching vibration and”
Biodiesel Production by Aspergillus niger Lipase Immobilized on Barium Ferrite Magnetic Nanoparticles DOI: 10.3390/bioengineering3020014 -
Alkyl C-H keyakinan 1.0
“The peak at 1351 is related to CH wagging of 2 cm1 The FTIR analysis of chalcone (ch), benzoxazine monooxazine.”
The effect of preparation conditions of chalcone based benzoxazine/magnetite nanocomposites on magnetization properties DOI: 10.1007/s10965-023-03515-x -
N-O bond keyakinan 1.0
“cm-1 in LDH, corresponding to both the C-O and N-O The vibration at 1351 cm-1 cm-1 strentching modes, shifts to 1361 in LDH-2 and 1370 in LDH-3.”
Zhu 等 - 2008 - In situ synthesis of surfactantsilane-modified hy DOI: 10.1016/j.jcis.2007.11.037 -
C-O single bond keyakinan 0.9
“Text: 'at 1351 and 1232 refer to deformation -C-OH vibrations'”
Aisha 等 - 2013 - Syzygium campanulatum korth methanolic extract inh DOI: 10.1186/1472-6882-13-168 -
keyakinan 0.9
“Text: '1351.27 (S+O)'”
High Potential Decolourisation of Textile Dyes from Wastewater by Manganese Peroxidase Production of Newly Immobilised Trametes hirsuta PW17-41 and FTIR Analysis DOI: 10.3390/microorganisms10050992 -
keyakinan 0.8
“New peak for PDA-RGO, due to C-N stretching.”
Determination of nicotine in tobacco products based on mussel-inspired reduced graphene oxide-supported gold nanoparticles DOI: 10.1038/srep29230
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