What absorbs at 1185 cm⁻¹ in an FTIR spectrum?
A band near 1185 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 |
|---|---|---|---|
| C-O single bond | 4 | 4 | 1.0 |
| Methoxy (OCH3) | 3 | 3 | 1.0 |
| Methacrylate | 3 | 3 | 1.0 |
| Acetate | 3 | 3 | 1.0 |
| Alkyl C-H | 3 | 2 | 1.0 |
| Secondary amine | 2 | 2 | 1.0 |
| Amide | 2 | 2 | 1.0 |
| Amine primary | 1 | 1 | 1.0 |
| N h | 1 | 1 | 1.0 |
| Nucleic acid | 1 | 1 | 1.0 |
| Phosphorus | 1 | 1 | 1.0 |
| Phosphate (PO4) | 1 | 1 | 1.0 |
| Carbohydrate | 1 | 1 | 1.0 |
| C n single bond | 1 | 1 | 1.0 |
| Sulfate (SO4) | 1 | 1 | 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
-
Alkyl C-H 信心 1.0
“with a remote attenuated total reflectance (ATR) probe for realmonitoring.17 However, they point out that overlapping time cm-1 C-O-C polymer absorbances at 1185 (asymmetric C-H vibration24) stretching vibration and asymmetric rocking”
Braun 等 - 2006 - Infrared spectroscopic determination of lactide co DOI: 10.1021/ma061922a -
Amide 信心 1.0
“the cm-1 cm-1 peak at 1185 is due to C-N stretching;”
Thakur 和 Lokhande - 2018 - Morphological Modification for Optimum Electrochem DOI: 10.4152/pea.201806377 -
Acetate 信心 1.0
“The band at 1185 cm-1 attributed for C-O stretching vibrations of ether groups results from carboxymethylation of cellulose or ether linkage of cellulose compartment in combination with that arising from the two”
Ahmed 等 - 2021 - STRUCTURAL AND OPTICAL CHARACTERISTICS OF POLY(VIN DOI: 10.4314/bcse.v35i3.12 -
Alkyl C-H 信心 1.0
“1667, 1595 1650, 1620, 1590 H 2O bending 1508, 1458 C-H vibration 1185, 816, 759, 577”
Lacalamita - 2018 - Micro-FTIR and EPMA Characterisation of Charoite f DOI: 10.1155/2018/9293637 -
Phosphate (PO4) 信心 1.0
“In the A-DNA infrared spectrum contains a new band at cm-1 case of nucleic acids, water and hydrated ions neu1185 assigned to the vibrations of deoxyribose tralize electrostatic repulsions between phosphate in the C3′-endo conformation [5],”
Olsztynska-Janus 等 - 2012 - Spectroscopic techniques in the study of human tis DOI: 10.5277/abb120314 -
Acetate 信心 1.0
“deformation of CH was evidenced at peak ~ 1364 At 3 cm-1 cm-1 ~ 1185 is the stretching of C-O-C and at ~ 1031 Statistic analysis”
Paraiso 等 - 2020 - Hibiscus sabdariffa L. extract Characterization ( DOI: 10.9755/ejfa.2020.v32.i1.2059 -
Acetate 信心 1.0
“4 cm-1, cm-1 stretching C=C at 1595 and 1500 stretching C-O at 1185 and bending C-H at 878, 757 5 6”
Spepi 等 - 2016 - Experimental and DFT Characterization of Halloysit DOI: 10.1517/17425247.2016.1169271. -
N h 信心 1.0
“C=S, vibration or N-C-N stretching vibration (1424 C-N, or NH rocking vibration (1185 2”
Synthesis and Characterization of Cu2FeSnS4–Cu2MnSnS4 Solid Solution Microspheres DOI: 10.3390/ma13194440
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