What absorbs at 2143 cm⁻¹ in an FTIR spectrum?
A band near 2143 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 5 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 |
|---|---|---|---|
| Thiocarbonyl | 1 | 1 | 1.0 |
| Adsorbed carbon monoxide | 1 | 1 | 1.0 |
| Methoxy (OCH3) | 1 | 1 | 1.0 |
| Methacrylate | 1 | 1 | 1.0 |
| C-O single bond | 1 | 1 | 1.0 |
| Acetate | 1 | 1 | 1.0 |
| Alkyl C-H | 1 | 1 | 1.0 |
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
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Alkyl C-H 信心 1.0
“2883.58 CH Stretching Methyne NACH3 2831.50 CH stretching Methylamine C@C 2142.91 stretching Alkynes PAO 2077.33 bond”
Spectral characterization of hydroxyapatite extracted from Black Sumatra and Fighting cock bone samples: A comparative analysis DOI: 10.1016/j.sjbs.2020.11.020 -
Acetate 信心 1.0
“The position of the observed C-O stretching in monocarbonyls 2 cm-1) (to be compared with vibration of gaseous CO, 2143 is the compromise between three”
Giordanino 等 - 2013 - Characterization of Cu-exchanged SSZ-13 a compara DOI: 10.1039/c3dt50732g -
Adsorbed carbon monoxide 信心 1.0
“2173 should be ascribed to the linear CO species on the Pt-SnO species without x cm-1 backdonation, because of the stretching frequency measured at 2143 cm-1 for the free CO molecule in d-π* a backdonation, because of the stretching frequen”
Co-Aromatization of n-Butane and Methanol over PtSnK-Mo/ZSM-5 Zeolite Catalysts: The Promotion Effect of Ball-Milling DOI: 10.3390/catal8080307 -
Thiocarbonyl 信心 1.0
“Peak at 2106 (Figure cm-1 5C) belongs to the characteristic peak of N=C=S stretch (at 2143 for pure NCO-C 6H 4N NCS solid).”
Zhang 和 Yan - 2010 - Analytical strategies for characterizing the surfa DOI: 10.1007/s00216-009-2996-1. -
信心 0.8
“IR band at 2143 cm-1 via its oxygen.”
Moussa 等 - 2018 - Nature of Active Nickel Sites and Initiation Mecha DOI: 10.1021/acscatal.7b03970
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