What absorbs at 923 cm⁻¹ in an FTIR spectrum?
A band near 923 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 |
|---|---|---|---|
| Alkyl C-H | 3 | 3 | 1.0 |
| Hydroxyl (O-H) | 2 | 2 | 1.0 |
| Secondary amine | 2 | 2 | 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 |
| Phosphate (PO4) | 1 | 1 | 1.0 |
| C n single bond | 1 | 1 | 1.0 |
| Amide | 1 | 1 | 1.0 |
| N h | 1 | 1 | 1.0 |
| Silicon nitrogen | 1 | 1 | 1.0 |
| Carboxyl (COOH) | 1 | 1 | 1.0 |
| Silicon-oxygen (Si-O) | 1 | 1 | 1.0 |
| Carbonate | 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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Carbonate 信心 1.0
“SO42(cid:2) 659.9 669.4 680.1 629.1 - - - - Due to bending vibration 715.7 713.5 720.8 720.8 714.1 715.0 713.3 715.7 - 877 874.3 874.2 874 874.7 874.3 874 878.6 Carbonate band 922.8 920.9 950.4 980.9 975.7 983.1 980.6 980.5 Peak shifts due”
Theoretical and experimental study of structures and properties of cement paste The nanostructural aspects of C–S–H DOI: 10.1016/j.jpcs.2011.05.001 -
信心 1.0
“cm-1 can be related to (iv) The prominent peak at 923 4.3 Interpretation of the Crystallization Behavior Si-O stretching with nonbridging oxygens and the of Hench's Bioglass and Related Substituted Glasses sharing of asymmetric stretching m”
El-Batal 等 - 2018 - Studies of Bone-Bonding Ability and Antibacterial DOI: 10.1007/s12633-017-9580-7 -
Carboxyl (COOH) 信心 1.0
“1638.25cm-1 <1700cm-1 -COOH(C=OStretching) (Medium) cm-1 cm-1 <1700 (Medium) -COOH (C=O Stretching) 1638.25 1010.16cm-1 and922.53cm-1 ±1050cm-1 -COOH(C-OStretching)”
Validation of the Developed Zero-Order Infrared Spectrophotometry Method for Qualitative and Quantitative Analyses of Tranexamic Acid in Marketed Tablets DOI: 10.3390/molecules26226985 -
Alkyl C-H 信心 1.0
“The peaks at 923 and 3.1 Film formation mechanism 1091-1 corresponds to the C-H symmetric stretching and C-H deformation vibrations, respectively.”
Thakur 和 Lokhande - 2017 - Effect of dip time on the electrochemical behavior DOI: 10.1515/epoly-2016-0160 -
Silicon nitrogen 信心 1.0
“2.0 10.4 (3) Si-N stretching 923 983 - - sin3 9.2”
Ay 和 Aydinli - 2004 - Comparative investigation of hydrogen bonding in s DOI: 10.1016/j.optmat.2003.12.004 -
N h 信心 1.0
“The weak band at 923 can be cm(cid:2)1, ascribed to the NH twisting, followed by a weak band at 889 which is related 3 cm(cid:2)1 to the ring deformation.”
Synthesis, crystal structure, and characterization of cyclohexylammonium tetraisothiocyanatocobaltate(II): A single-source precursor for cobalt sulfide and oxide nanostructures DOI: 10.1016/j.heliyon.2019. -
信心 1.0
“bond is observed near 430 cm cm-1 The band at 923 is due to the vibration modes of non-bridging oxygen's in alumino-”
Kumar 等 - 2022 - Synthesis and characterization of cordierite and c DOI: 10.15251/JOR.2022.184.609 -
Amide 信心 1.0
“polysaccharides(e.g.,glucose) DNAandRNAribose-phosphatechain C-N+-Cstretching 923 vibrationofRNA PhosphodiestergroupsofPO21121 RNA”
Fourier-Transform Infrared Spectroscopy as a Discriminatory Tool for Myotonic Dystrophy Type 1 Metabolism: A Pilot Study DOI: 10.3390/ijerph18073800
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