What absorbs at 1736 cm⁻¹ in an FTIR spectrum?
A band near 1736 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
可能的官能基指派
| 官能基 | 支持事實 | 引用來源 | 最高信心 |
|---|---|---|---|
| Carbonyl (C=O) | 16 | 15 | 1.0 |
| Ester | 3 | 3 | 0.9 |
| Carboxyl (COOH) | 2 | 2 | 1.0 |
| Metal oxygen | 1 | 1 | 0.9 |
| Lignin | 1 | 1 | 0.7 |
| Alkyl C-H | 1 | 1 | 0.7 |
| Carbohydrate | 1 | 0 | 0.8 |
排名反映累積的文獻證據，而非單一權威規則。請務必根據您的樣品背景進行確認。
這些指派背後的文獻
-
Carboxyl (COOH) 信心 1.0
“Explicit assignment: 'carboxyl group (1736 C=O)'”
Mao 等 - 2020 - Bola-amphiphile-imidazole embedded GO membrane wit DOI: 10.1016/j.memsci.2019.117545 -
Ester 信心 0.9
“Explicit assignment: 'indicating the presence of ester bonds'.”
Broderick 等 - 2006 - The characterisation of a novel, covalently modifi DOI: 10.1016/j.jcis.2005.12.026 -
信心 0.9
“IR marker mode for phenylboronate ester.”
Brewer 等 - 2004 - Infrared detection of a phenylboronic acid termina DOI: 10.1021/la035037m -
Carbonyl (C=O) 信心 0.9
“Text: '1736 cm-1 are due to ... C=O stretching'”
Cetiner 等 - 2011 - Characterization of Conductive Poly(Acrylonitrile- DOI: 10.1007/s12221-011-0151-z -
Carbonyl (C=O) 信心 0.9
“Peak range 1736.3-1743.3 cm-1 indicating C=O stretch of triglycerides.”
Krishnamurthy 和 Amritkumar - 2019 - Synthesis and characterization of eco-friendly bio DOI: 10.1007/s42452-019-1460-x -
Carbonyl (C=O) 信心 0.9
“Assigned to different carbonyl groups in conformation trans”
Lai 和 Wu - 2008 - Investigation on the conformations of AOT in water DOI: 10.1016/j.molstruc.2008.01.017 -
Carboxyl (COOH) 信心 0.9
“Downshifted to 1736/1762 cm-1 in D2O, assigned to carboxyl group.”
Marechal 等 - 2012 - Assignment of the CO-sensitive carboxyl group in m DOI: 10.1016/j.bbabio.2012.03.036 -
Ester 信心 0.9
“Explicit assignment: 'bands at 1736 ... corresponding to ester'”
Pathak 等 - 2015 - Cholesterol anchored arabinogalactan for asialogly DOI: 10.1016/j.carres.2015.03.003
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