What absorbs at 1497 cm⁻¹ in an FTIR spectrum?
A band near 1497 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 1497 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 |
|---|---|---|---|
| Aromatic ring | 7 | 5 | 1.0 |
| C c single bond | 4 | 3 | 1.0 |
| Alkyl C-H | 3 | 3 | 1.0 |
| Alkene (C=C) | 3 | 3 | 1.0 |
| N h | 3 | 3 | 1.0 |
| C=n | 3 | 3 | 1.0 |
| Ring structure | 3 | 2 | 1.0 |
| Amide | 2 | 2 | 1.0 |
| Hydrogen bond | 1 | 1 | 1.0 |
| Hydroxyl (O-H) | 1 | 1 | 1.0 |
| Amino acid | 1 | 1 | 1.0 |
| N n bond | 1 | 1 | 1.0 |
| Secondary amine | 1 | 1 | 1.0 |
| C n single bond | 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 |
|---|---|---|---|
| TiO2 | 1497, 1700, 1093 | Alkyl C-H | 1 |
| TiO | 1497, 1730, 1699 | Alkyl C-H | 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 1497 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
-
C=n keyakinan 1.0
“The peaks observed at 1497, 1466 and cm-1 205 1400 are attributed to C=N stretching in aromatic compounds.”
Effect of polyaniline (PANI) on Poly(vinylidene fluoride-co-hexaflouro propylene) (PVDF-co-HFP) polymer electrolyte membrane prepared by breath figure method DOI: 10.1016/j.polymertesting.2017.03.012 -
keyakinan 1.0
“The strong transmission bands at 1497 cm-1 are attributed to the vibration of stretchstretching and deformation of the Ti-O-Ti bond lift-up (stemming) from the Cu substrate ing and deformation of the Ti-O-Ti bond lift-up (stemming) from the”
Effect of Microstructural and Tribological Behaviors of Sputtered Titanium Carbide Thin Film on Copper Substrate DOI: 10.3390/ma16010174 -
Amide keyakinan 1.0
“peak values at 1496.93 The stretching vibration of C-N group of RR2 appears at 1217 cm-1 N The peaks at 1186.54, 1129.39, 1048.24 and 668.21 showed S=O stretching vibrations.”
Sakthisharmila 等 - 2017 - A characteristic study on generation and interacti DOI: 10.1016/j.molliq.2017.01.106 -
Alkene (C=C) keyakinan 1.0
“1479 1476 C=C stretching 1497 1497 C=N stretching”
Photodegradation of Azathioprine in the Presence of Sodium Thiosulfate DOI: 10.3390/ijms23073975 -
C c single bond keyakinan 1.0
“The bands at 1497 and 1455 can be readily assigned to cm-1 to the C-C stretching skeletal vibrations of the aromatic ring and the band centred at 1208 cm-1 vibration.”
Augugliaro 等 - 2008 - Photocatalytic oxidation of aromatic alcohols to a DOI: 10.1016/j.apcata.2008.07.038 -
Alkyl C-H keyakinan 1.0
“The red-shifted band is observed at 1497 aH bending and asymmetric counterparts of the ring CC/ HC CH stretching mode are not evident but are predicted to be low intensity modes.”
Hydrogen Bonding in Human Manganese Superoxide Dismutase Containing 3-Fluorotyrosine DOI: 10.1529/biophysj.105.060616 -
Aromatic ring keyakinan 1.0
“These Raman lines are atFigure 5a-c have maxima at ~415-498 cm-1, 621-825 cm-1, 906-1003 cm-1, 1184 cm-1, 1331 C=N stretching, C=C stretching in the quinoid ring and C-C stretching in the benzene ring, tributed to the vibrational modes caus”
The Photoluminescence and Vibrational Properties of Black Phosphorous Sheets Chemically/Electrochemically Functionalized in the Presence of Diphenylamine DOI: 10.3390/polym14214479 -
Amide keyakinan 1.0
“40 41 cm-1 In the amide II region (W4) a peak at 1497 was found in 100% of exudate and serum 42 43”
Cerusico 等 - 2018 - FTIR spectroscopy of chronic venous leg ulcer exud DOI: 10.1039/C7AN01909B.
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.