What absorbs at 1995 cm⁻¹ in an FTIR spectrum?
A band near 1995 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
可能的官能团归属
| 官能团 | 支持性事实 | 引用来源 | 最高置信度 |
|---|---|---|---|
| Methoxy (OCH3) | 1 | 1 | 1.0 |
| Methacrylate | 1 | 1 | 1.0 |
| C-O single bond | 1 | 1 | 1.0 |
| Acetate | 1 | 1 | 1.0 |
| Carboxyl (COOH) | 1 | 1 | 1.0 |
| Water (H2O) | 1 | 1 | 1.0 |
| Amide | 1 | 1 | 1.0 |
| C c single bond | 1 | 0 | 1.0 |
排名反映了累积的文献证据，而非单一的权威规则。请始终对照您的样品背景进行确认。
这些分配背后的文献
-
Amide 置信度 1.0
“multiple functional groups,it is less useful for protein structure anti-symmetric stretch vibration is highly example, the CH 3 prediction than the amide I band (Jackson & Mantsch, 1995, intensive in the aleurone cell layer, indicating a hi”
Microprobing the molecular spatial distribution and structural architecture of feed-type sorghum seed tissue (Sorghum Bicolor L.) using the synchrotron radiation infrared microspectroscopy technique DOI: 10.1107/S0909049511023727 -
Water (H2O) 置信度 1.0
“cm-1 due to C=O stretching vibrations of the pectin and the The wavelengths ranged from 1700 to 1500 acids, but these absorption bands were usually overlapped by the water absorption band (Defernez & Wilson, 1995).”
Coelho 等 - 2020 - DOI: 10.1590/1981-6723.19418 -
Carboxyl (COOH) 置信度 1.0
“Giurginca et al., 2003) ν-C¼O 1732 aldehyde Stretching (Liu et al., 2011) 1705-1725 ν-C¼O ketone Stretching (Socrates) ν-C¼O 1714 carboxylic acid Stretching (Tidjani and Watanabe,1995;”
One year monitoring by FTIR of γ-irradiated multilayer film PE/EVOH/PE DOI: 10.1016/j.radphyschem.2016.03.010 -
Acetate 置信度 1.0
“ATR/FTIR indicated a distinct enhancement to the In: Plastics, fibres, rubbers, resins, starting and auxiliary matericm-1) cm-1) amide I (1650 and amide II (1550 bands als: degradation products, vol 2, 2nd ed., Hanser-VCH, Weinheim indicati”
Rahman 等 - 2018 - Characterization of new and fouled SWRO membranes DOI: 10.1007/s13201-018-0806-7 -
置信度 0.8
“Text: 'intrinsic absorption at 1995'”
Lai 等 - 2020 - Spectroscopic features of natural and HPHT-treated DOI: 10.1016/j.diamond.2019.107642
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