What absorbs at 1352 cm⁻¹ in an FTIR spectrum?
A band near 1352 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 1352 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 |
|---|---|---|---|
| Carboxyl (COOH) | 4 | 3 | 1.0 |
| Secondary amine | 2 | 2 | 1.0 |
| Amide | 2 | 2 | 1.0 |
| Aromatic ring | 2 | 2 | 1.0 |
| Water (H2O) | 2 | 2 | 1.0 |
| Phosphate (PO4) | 2 | 2 | 1.0 |
| Alkyl C-H | 2 | 2 | 1.0 |
| S eq o | 1 | 1 | 1.0 |
| C n single bond | 1 | 1 | 1.0 |
| N h | 1 | 1 | 1.0 |
| Carbon dioxide | 1 | 1 | 1.0 |
| Hydroxyl (O-H) | 1 | 1 | 1.0 |
| Methacrylate | 1 | 1 | 1.0 |
| Ketone | 1 | 1 | 1.0 |
| Ester | 1 | 1 | 1.0 |
| Carbonyl (C=O) | 1 | 1 | 1.0 |
| Acetate | 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 |
|---|---|---|---|
| ZnO | 1352, 1400, 3430 | Amide | 1 |
| SnO2 | 1352, 2800, 1547 | Amide | 1 |
| ZnO nanoparticles | 1352, 1219, 1726 | Amide, Carboxyl (COOH) | 1 |
| silver nanoparticles | 1352, 1636, 1631 | Amide | 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 1352 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
-
Alkyl C-H keyakinan 1.0
“Spectral peak at 1352 shows the cm-1 presence of deforming of C-H alkyl while 2882 indicates the presence of str-C-H alkyl stretching.”
Diantoro 等 - 2018 - Control of Dielectric Constant and Anti-Bacterial DOI: 10.1088/1757-899X/367/1/012012 -
Carboxyl (COOH) keyakinan 1.0
“As the sample is cm-1 have heated above 500 K, the peaks at 1362 and 1387 cm-1 disappeared and two new peaks appear at 1352 and 1400 (Figure 6c, 590 K) indicative of the formate species undergoing (COO-) bound to the deprotonation to a carb”
Durand 等 - 2010 - Reaction of Formic Acid over Amorphous Manganese O DOI: 10.1021/jp104629j -
Carboxyl (COOH) keyakinan 1.0
“A peak at 1352 cm-1 might be due to carboxylic acid.”
Pauzi 等 - 2019 - Microwave-assisted Synthesis of ZnO Nanoparticles DOI: 10.9767/bcrec.14.1.3320.182-188) -
keyakinan 1.0
“noticeable peak in both samples at 1352 and 1382 cm-1, which is linked to the presence of calcium phosphates and CO and C=O groups, which can be evidenced in the characteri-”
Influence of the Alcoholic/Ethanolic Extract of Mangifera indica Residues on the Green Synthesis of FeO Nanoparticles and Their Application for the Remediation of Agricultural Soils DOI: 10.3390/molecules26247633 -
Alkyl C-H keyakinan 1.0
“Similar results regarding the of vibrational peaks at 1592, 1352, and The main reflection 1592cm-1 Braggs of AgNPs were reported previously (Nouri et al., positional peak was observed at and corresponded to 2020;Dawoudetal.,2021;Elshafeieta”
Dhaka 等 - 2022 - Balanites aegyptiaca leaf extract-mediated synthes DOI: 10.3389/fbioe.2022.977101 -
Phosphate (PO4) keyakinan 1.0
“The intense Raman bands from 1086 specific to (PO cm-1 units and O-P-O Raman bands from 1352 and 1369 in the case of Er and, respectively, Yb-Erdoped glasses certify the change of the local symmetry.”
Elisa 等 - 2021 - Peculiarities of the structural and optical proper DOI: 10.1002/bltj.20400. -
Hydroxyl (O-H) keyakinan 1.0
“1352.06cm-1 1654cm-1 and (O-H stretching of aromatic ring) [40].”
Farmoudeh 等 - 2020 - Solid Dispersion Pellets An Efficient Pharmaceuti DOI: 10.1155/2020/8583540 -
Water (H2O) keyakinan 1.0
“Weathered materials such as jarLycopodium samples containing spore concentrations of ositic clay contain significant amounts of water and produce 0.5% and 1.0%, it was observed that the extent to which the stronger water signals at lower te”
Gordon 和 Sephton - 2016 - Organic Matter Detection on Mars by Pyrolysis-FTIR DOI: 10.1089/ast.2016.1485
Ada spektrum dengan jalur ini?
Muat naik spektrum FTIR anda dan dapatkan laporan tafsiran penuh — penetapan puncak dengan petikan literatur, padanan perpustakaan, dan rantaian bukti berkadar keyakinan — dalam beberapa saat.