What absorbs at 2990 cm⁻¹ in an FTIR spectrum?
A band near 2990 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 6 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 |
|---|---|---|---|
| Alkyl C-H | 5 | 5 | 1.0 |
| Hydroxyl (O-H) | 2 | 2 | 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
“LLM confirmed rule peak-group candidate”
Synthesis, characterization, and crystallization behaviors of poly(D-lactic acid)-based triblock copolymer DOI: 10.1038/s41598-020-60458-9 -
Alkyl C-H 信心 1.0
“FTIR data revealed that Ery-PLGA nanoparticles' peaks were around 3650 cm-1 and 3500 cm-1 due to O-H stretching vibrations, at near 2950 cm-1 and 2990 cm-1 assigned to CH stretch vibrations, 1760 cm-1 to C=O, 1460 cm-1 attributed to C-H bin”
Nano-Architectonics of Antibiotic-Loaded Polymer Particles as Vehicles for Active Molecules DOI: 10.3390/app12041998 -
Hydroxyl (O-H) 信心 1.0
“The broad band between 3660 cm-1 and 2990 cm-1 is associated with complex vibrational stresses of free, inter-, and intramolecular bonds of hydroxyl groups [49,50].”
Morphology and Selected Properties of Modified Potato Thermoplastic Starch DOI: 10.3390/polym15071762 -
Alkyl C-H 信心 1.0
“LLM confirmed rule peak-group candidate”
Selective magnetic GMA based potential sorbents for molybdenum and rhenium sorption DOI: 10.1016/j.jallcom.2017.02.108 -
Alkyl C-H 信心 1.0
“Furthermore, a peak at 2990 corresponded to the C-H stretch of alkane.”
Improved anti-biofouling resistances using novel nanocelluloses/cellulose acetate extracted from rice straw based membranes for water desalination DOI: 10.1038/s41598-022-08324-8 -
Alkyl C-H 信心 1.0
“LLM confirmed rule peak-group candidate”
Chitosan-Based Films with 2-Aminothiophene Derivative: Formulation, Characterization and Potential Antifungal Activity DOI: 10.3390/md20020103
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