What absorbs at 723 cm⁻¹ in an FTIR spectrum?
A band near 723 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
Možná přiřazení funkčních skupin
| Funkční skupina | Podpůrná fakta | Citované zdroje | Nejvyšší spolehlivost |
|---|---|---|---|
| Alkyl C-H | 5 | 5 | 1,0 |
| Hydroxyl (O-H) | 1 | 1 | 1,0 |
Pořadí odráží nahromaděné literární důkazy, nikoli jediné autoritativní pravidlo. Vždy potvrďte v kontextu vašeho vzorku.
Literatura za těmito přiřazeními
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Alkyl C-H spolehlivost 1,0
“cm-1 vibrations CH and CH bands were clearly seen in the region of 1465 while the band at 723 2 3 was assigned to a CH [25,26].”
Monitoring Enzymatic Hydroesterification of Low-Cost Feedstocks by Fourier Transform InfraRed Spectroscopy DOI: 10.3390/catal9060535 -
Hydroxyl (O-H) spolehlivost 1,0
“Sample S076 consists only of trans-vacant (tv) layers because its DTG curve and IR spectrum contain cm-1, a single dehydroxylation maximum at T = 723 °C and an OH stretching band 3675 respectively.”
Drits 等 - 2011 - New insight into the structural transformation of DOI: 10.2138/am.2011.3605 -
Alkyl C-H spolehlivost 1,0
“cm-1 cm-1, 1656 are vibrating peaks of cis (C=C) and cis (C-H) AND and CDB have spectral similarities at 723 cm-1 groups of USFA acids.”
Martins 等 - 2019 - Approach by Raman and infrared spectroscopy in thr DOI: 10.31349/RevMexFis.65.328 -
Alkyl C-H spolehlivost 1,0
“FTIR spectrum cm-1 (C-H) common for these types of compounds, and belong to also shows absorption bands at 723 for group the methylene carbon atoms of MEOA and HYOOA vibration.”
Salimon 等 - 2013 - Synthesis and optimization ring opening of monoepo DOI: 10.1186/2193-1801-2-429 -
Alkyl C-H spolehlivost 1,0
“inner layer had the highest peak for the C-H bond, with bands at 723 and 2823 The symmetry deformation of CH on aliphatic hydrocarbons was assigned to the peak 3”
Physical and Chemical Characteristics of Agricultural-Plastic Wastes for Feasibility of Solid Fuel Briquette Production DOI: 10.3390/su142315751 -
Alkyl C-H spolehlivost 1,0
“In addition, lower absorption with limited variations was cm-1 observed in absorption between 1460 and 400 (Figure 3), with a rather distinct one cm-1, cis in the band of 723 that responds to (C-H) out-of-plane deformation [27,28].”
Banou 等 - 2023 - Oil Media on Paper Investigating the Interaction DOI: 10.3390/polym15112567
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