What absorbs at 2115 cm⁻¹ in an FTIR spectrum?
A band near 2115 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 4 cited sources
Jawapan pantas
A band near 2115 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 |
|---|---|---|---|
| Adsorbed carbon monoxide | 4 | 2 | 1.0 |
| C#c | 1 | 1 | 1.0 |
| Silicon hydride | 1 | 0 | 1.0 |
Pemeringkatan mencerminkan bukti literatur terkumpul, bukan satu peraturan berwibawa. Sentiasa sahkan terhadap konteks sampel anda.
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 2115 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
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Adsorbed carbon monoxide keyakinan 1.0
“DRIFTS results on 2 cm-1 bands at 2115 and 2173 are indicative of linearly adsorbed CO adsorption using in situ FTIR (DRIFTS) was used to probe the on metallic gold [5] and the titania support [29], respectively, CO”
Gaur 等 - 2013 - CO oxidation studies over cluster-derived AuTiO2 DOI: 10.1016/j.cattod.2012.10.029 -
C#c keyakinan 1.0
“cm-1) The sharp vibration υ (2115 may be attributed sue of the heart such as the fibroblast [35] and ultimately s to a C ≡C (alkyne) which could be present in the thercausing grave biological damage and cardiopulmonary”
Kibet 等 - 2018 - Free radicals and ultrafine particulate emissions DOI: 10.1186/s13065-018-0458-6 -
Adsorbed carbon monoxide keyakinan 1.0
“The spectra were recorded at (2115cm-1) ascribed to CO adsorbed on isolated Pt atoms and metallic 4cm-1 3950-600cm-1 resolution in the range by averaging 100 in- (2057cm-1), [31-34].”
Litke 等 - 2019 - Interfacial charge transfer in Pt-loaded TiO2 P25 DOI: 10.1016/j.jphotochem.2018.10.023 -
keyakinan 0.9
“Band at 2115 attributed to ferricyanide in water”
Cheah 和 Chernev - 2021 - Electrochemical oxidation of ferricyanide DOI: 10.1038/s41598-021-02355-3
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.