What absorbs at 990 cm⁻¹ in an FTIR spectrum?
Una banda cerca de 990 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 7 cited sources
Posibles asignaciones de grupos funcionales
| Grupo funcional | Hechos de respaldo | Fuentes citadas | Confianza máxima |
|---|---|---|---|
| C c single bond | 2 | 2 | 1,0 |
| Fatty acid | 2 | 1 | 1,0 |
| Carbohydrate | 1 | 1 | 1,0 |
| C-S single bond | 1 | 1 | 1,0 |
| N-O bond | 1 | 1 | 1,0 |
| Alkyl C-H | 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
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Fatty acid confianza 1,0
“different trans fatty acid contents and the other is to integrate 966cm(cid:2)1 945cm(cid:2)1 the area under band between 990 and limits.”
Quantification of trans fatty acid content in French fries of local food service retailers using attenuated total reflection ⠍ Fourier transform infrared spectroscopy DOI: 10.1016/j.foodchem.2010.09.078 -
C c single bond confianza 1,0
“1480cm-1 are due to quadrant and semithe peaks at 1490 and FTRamanwasduetoCH 3inplanebendingvibrations[22].Theband 990cm-1 circle stretching of C C bonds respectively [16].”
Nagabalalsubramanian 等 - 2009 - A scaled quantum mechanical approach of vibrationa DOI: 10.1016/j.saa.2009.10.002 -
Alkyl C-H confianza 1,0
“1620cm-1 1200cm-1 1650 and and the out-of-plane bending vibrations are for C-CH stretching vibration and is combined with 3 990cm-1.”
Vibrational spectroscopy [FTIR and FTRaman] investigation, computed vibrational frequency analysis and IR intensity and Raman activity peak resemblance analysis on 4-chloro 2-methylaniline using HF and DFT [LSDA, B3LYP and B3PW91] calculations DOI: 10.1016/j.saa.2010.12.068 -
C c single bond confianza 1,0
“(cm-1) Wave number Groups on NDPs surface C-O-C stretching vibrational, OH groups 990 C-C stretching, nitrogen defects (for detonation NDPs) 1220-1260 (sp3) C-C stretching vibrations of the diamond lattice 1300”
Rouhani 等 - 2016 - Purification and functionalization of nanodiamond DOI: 10.1016/j.msec.2016.02.075 -
N-O bond confianza 1,0
“In contrast, the spectra of linseed oil cm-1 cm-1 (Figure 11) initially showed no peaks at 990 or 960”
Wang 等 - 2008 - Fourier transform infrared spectra of drying oils DOI: 10.1021/jf073545m -
C-S single bond confianza 1,0
“Furthermore, the ν(C-S) the stretching in this present study was found in both complexes as a single band cm-1, stretching ν(C-S) in this present study was found in both complexes as a single band bebetween 990 and 988 indicative of bidenta”
Synthesis, Theoretical Calculation, and Biological Studies of Mono- and Diphenyltin(IV) Complexes of N-Methyl-N-hydroxyethyldithiocarbamate DOI: 10.3390/molecules27092947 -
Carbohydrate confianza 1,0
“It is obvious from FTIR spectra that honey heating leads to a change in the ratio of the cm-1 cm-1, intensities of the bands at 990 and 1050 corresponding to fructose and glucose respectively [28].”
Rapid Detection of Thermal Treatment of Honey by Chemometrics-Assisted FTIR Spectroscopy DOI: 10.3390/foods10112892
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