What absorbs at 719 cm⁻¹ in an FTIR spectrum?
Una banda cerca de 719 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 | 7 | 7 | 1,0 |
| Hydroxyl (O-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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Alkyl C-H confianza 1,0
“In particular, for PE at 710 and 719 cm-1 (-CH2 rocking deformation), 2847 and 2915 cm-1 (- symmetric and asymmetric stretching), 1462 and 1472 cm-1 (-CH=CHstretching) CH2 [36].”
Campanale 等 - 2023 - Fourier Transform Infrared Spectroscopy to Assess DOI: 10.3390/polym15040911 -
Alkyl C-H confianza 1,0
“The peak at 3005 attributes to the stretching vibrations of C-H in cm-1 H-C=C and the peak at 718.8 corresponds to out-of-plane bending vibrations of ACCEPTED”
Liang 等 - 2017 - Thermo-stability and aging performance of modified DOI: 10.1016/j.matdes.2017.04.060 -
Alkyl C-H confianza 1,0
“1356cm(cid:1)1 1468 and correspond to scissoring vibration of the 729cm1 methylene group, while weak peaks at 719 and can be ascribed to rocking vibration of methylene group.”
Olajire 和 Mohammed - 2020 - Green synthesis of nickel oxide nanoparticles and DOI: 10.1016/j.apt.2019.10.012 -
Alkyl C-H confianza 1,0
“The peaks at 719 cm-1 can be assigned to both CH2 rocking cm-1”
Walnut Oil Oleogels as Milk Fat Replacing System for Commercially Available Chocolate Butter DOI: 10.3390/gels8100613 -
Alkyl C-H confianza 1,0
“FTIR bands at 719 is associated with CH rocking 2 The results of measured total birefringence and the one mode of amorphous trans sequences of four or more cmK1 calculated from the crystalline axes orientation factors sequences, 1303 to CH”
Biaxial orientation in HDPE films : Comparison of infrared spectroscopy, X-ray pole figures and birefringence techniques DOI: 10.1016/j.polymer.2005.03.002 -
Alkyl C-H confianza 1,0
“719.71cm-1 to and to beeswax combination increased with increasing amounts of 718.71cm-1 which corresponds to C-H (CH 2), C-H (CH 3) beeswax, which is as expected due to the hardening effect of -C�O stretching vibrations, stretching vibrati”
Bartels 等 - 2021 - Formulation of Suppositories of Alum Produced from DOI: 10.1155/2021/6667562 -
Hydroxyl (O-H) confianza 1,0
“cm-1 (Figure 7C), 2847 (-CH symmetric stretching) (Figure 7C), 1462 (-CH bending cm-1 cm-1 deformation) (Figure 7E), 1375 (-O-H stretching), and 719 (rocking vibrational mode of -CH 2) (Figure 7G).”
Gong 等 - 2023 - Biodegradation of Low Density Polyethylene by the DOI: 10.3390/jof9060605 -
Alkyl C-H confianza 1,0
“The production and packaging of LDPE, the peak wavelength at represents the CH bend, 3 730cm-1, 719cm-1 717cm-1”
Hossain 等 - 2023 - First evidence of microplastics and their characte DOI: 10.3389/fenvs.2023.1232931
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