What absorbs at 719 cm⁻¹ in an FTIR spectrum?
Ивица близо до 719 cm⁻¹ може да сочи към няколко функционални групи. По-долу са най-вероятните присвоявания, подредени по количеството публикувани доказателства, които ги подкрепят — всяко едно проследимо до литература (DOI) и кръстосано валидирано спрямо нашите 130 000+ референтни спектъра и графика на знанията.
Backed by 8 cited sources
Възможни определяния на функционални групи
| Функционална група | Подкрепящи факти | Цитирани източници | Най-висока достоверност |
|---|---|---|---|
| Alkyl C-H | 7 | 7 | 1,0 |
| Hydroxyl (O-H) | 1 | 1 | 1,0 |
Класирането отразява натрупаните литературни доказателства, а не единично авторитетно правило. Винаги потвърждавайте спрямо контекста на вашата проба.
Литература зад тези определяния
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Alkyl C-H достоверност 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 достоверност 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 достоверност 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 достоверност 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 достоверност 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 достоверност 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) достоверност 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 достоверност 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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