What absorbs at 1735 cm⁻¹ in an FTIR spectrum?
A band near 1735 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
Возможные назначения функциональных групп
| Функциональная группа | Подтверждающие факты | Цитируемые источники | Максимальная достоверность |
|---|---|---|---|
| Carbonyl (C=O) | 26 | 24 | 1,0 |
| Ester | 4 | 4 | 0,9 |
| Carboxyl (COOH) | 4 | 3 | 1,0 |
| Acetyl | 4 | 3 | 0,95 |
| Carbohydrate | 2 | 2 | 1,0 |
| Alkene (C=C) | 1 | 1 | 1,0 |
| Water (H2O) | 1 | 1 | 0,9 |
| Lipid | 1 | 1 | 0,9 |
| Azide | 1 | 1 | 0,9 |
| Acetate | 1 | 1 | 0,9 |
| Hydroxyl (O-H) | 1 | 1 | 0,7 |
Ранжирование отражает накопленные литературные данные, а не единственное авторитетное правило. Всегда проверяйте в контексте вашего образца.
Литература, лежащая в основе этих назначений
-
Carbonyl (C=O) достоверность 1,0
“Peak at 1735.03 is C=O stretching evidencing hemicelluloses and pectin.”
Ikramullah 等 - 2018 - Hemicellulose and lignin removal on typha fiber by DOI: 10.1088/1757-899X/352/1/012019 -
Carboxyl (COOH) достоверность 1,0
“Explicit assignment: bond stretching vibrations of carboxyl groups (C=O).”
Cesconeto 等 - 2017 - Evaluation of a Thermochromic Liquid Crystal for U DOI: 10.1590/1980-5373-MR-2016-0717 -
Alkene (C=C) достоверность 1,0
“band at 1735 is due to C=C stretching vibration”
Jaleh 等 - 2015 - Characteristics of PVDF Membranes Irradiated by El DOI: 10.3390/membranes5010001 -
Carbonyl (C=O) достоверность 1,0
“Explicit assignment in text.”
Khoshnam 等 - 2021 - alpha-Fe2O3graphene oxide powder and thin film na DOI: 10.1038/s41598-021-99849-x -
Carbonyl (C=O) достоверность 1,0
“C=O in vinyl acetate”
Omastova 等 - 2019 - Electrospinning of Ethylene Vinyl AcetateCarbon N DOI: 10.3390/polym11030550 -
достоверность 1,0
“Explicit assignment in text: 'The peak at 1735 cm-1 was due to C=O stretching vibrations of galacturonic acid'”
Sadiq 等 - 2022 - Designing Deferoxamine-Loaded Flaxseed Gum and Car DOI: 10.3390/gels8100652 -
достоверность 0,95
“Explicitly assigned: 'lipid carbonyl band at 1735cm-1'”
Stitt 等 - 2012 - Tissue acquisition and storage associated oxidatio DOI: 10.1016/j.vibspec.2011.10.016 -
Carbonyl (C=O) достоверность 0,95
“Text: 'stretching characteristic band at 1735 which is associated with the stearic acid'”
Aboelkheir 等 - 2019 - Biodegradation of Vulcanized SBR A Comparison bet DOI: 10.1038/s41598-019-55530-y
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