What absorbs at 923 cm⁻¹ in an FTIR spectrum?
Una banda cerca de 923 cm⁻¹ puede apuntar a varios grupos funcionales. A continuación se muestran las asignaciones más probables, clasificadas por cuánta evidencia publicada respalda cada una — cada una trazable a literatura (DOI) y validada de forma cruzada con nuestros más de 130,000 espectros de referencia y grafo de conocimiento.
Backed by 8 cited sources
Posibles asignaciones de grupos funcionales
| Grupo funcional | Hechos de respaldo | Fuentes citadas | Confianza máxima |
|---|---|---|---|
| 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 |
La clasificación refleja la evidencia acumulada de la literatura, no una única regla autorizada. Siempre confirme según el contexto de su muestra.
Literatura detrás de estas asignaciones
-
Carbonate confianza 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 -
confianza 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) confianza 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 confianza 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 confianza 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 confianza 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. -
confianza 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 confianza 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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