What absorbs at 779 cm⁻¹ in an FTIR spectrum?
A band near 779 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 6 cited sources
Galimi funkcinių grupių priskyrimai
| Funkcinė grupė | Pagrindžiantys faktai | Cituoti šaltiniai | Aukščiausias pasitikėjimas |
|---|---|---|---|
| Silicon-oxygen (Si-O) | 2 | 2 | 1,0 |
| Carbonate | 1 | 1 | 1,0 |
| Metal oxygen | 1 | 1 | 1,0 |
| Alkyl C-H | 1 | 1 | 1,0 |
| Carboxyl (COOH) | 1 | 1 | 1,0 |
| C c single bond | 1 | 0 | 1,0 |
Reitingavimas atspindi sukauptą literatūros įrodymų kiekį, o ne vieną autoritetingą taisyklę. Visada patvirtinkite pagal savo mėginio kontekstą.
Literatūra, kuria remiantis atlikti šie priskyrimai
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Silicon-oxygen (Si-O) pasitikėjimas 1,0
“LLM confirmed rule peak-group candidate”
Preparation and Characterization of Low-Carbon Cementitious Materials Based on Soda-Residue-Activated Ground Granulated Blast-Furnace Slag: A Case Study on Cemented Paste Backfills DOI: 10.3390/met -
Silicon-oxygen (Si-O) pasitikėjimas 1,0
“The sand dunes samples infrared absorption spectrum show the characteristic vibration bond peaks for quartz as 460, 695, 779 cm-1, cm-1.”
Mineralogical Analysis of Sand Roses and Sand Dunes Samples from Two Regions of South Algeria DOI: 10.1007/s12633-018-9974-1 -
Carboxyl (COOH) pasitikėjimas 1,0
“1365 (Cu), 1360, 1321 C-2, C-2G, C-4, C4-G, C-5, D-1, F-1, F-4, Ca, Pb, Cu-oxalate J-2, J-3, J-3G, J-4, K-4 (Pb), 1321 (Ca) (-COO symmetric stretch), δwagging 779 (-COO) 1584 (Cu), 1577 (Ca), 1541 (Pb), 1539 (Ca),”
New Insights into the Medieval Hispano-Muslim Panel Painting: The Alfarje Found in a Balearic Casal (Spain) DOI: 10.3390/molecules28031235 -
Alkyl C-H pasitikėjimas 1,0
“Another band cm-1 was observed at 779 which was attributed to CH vibration.”
Quality by Design (QbD) based process optimisation to develop functionalised particles with modified release properties using novel dry particle coating technique DOI: 10.1371/journal. -
Metal oxygen pasitikėjimas 1,0
“1 Al-O stretching 779.24 779.24 775.38 1 Al-O stretching”
Blending Plastics Waste with Highly Available Jordanian Kaolin for Preparation of Alkali-Activated Mortars DOI: 10.3390/su142315742 -
Carbonate pasitikėjimas 1,0
“The assignment of Co 2p peaks was literature:29 the peak at 779.4 eV corresponds to based on Co3+,”
Lukashuk 等 - 2018 - Operando Insights into CO Oxidation on Cobalt Oxid DOI: 10.1021/acscatal.8b01237
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