What absorbs at 1790 cm⁻¹ in an FTIR spectrum?
Ивица близо до 1790 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 6 cited sources
Възможни определяния на функционални групи
| Функционална група | Подкрепящи факти | Цитирани източници | Най-висока достоверност |
|---|---|---|---|
| Fatty acid | 2 | 2 | 1,0 |
| Water (H2O) | 1 | 1 | 1,0 |
| C c single bond | 1 | 1 | 1,0 |
| Imide | 1 | 1 | 1,0 |
| Carboxyl (COOH) | 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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Carboxyl (COOH) достоверност 1,0
“The high-frequency cm-1 1721cm-1 cm-1 shoulder to the main C=O peaks, 1731 in 1 and in 2, at ~1790 cm-1 (1) and at ~1784 (2), also detectable in Nujol, is probably due to a ''free" cm-1 cm-1 carboxylic group whereas the weaker peaks, at 165”
2,2′,2″-Thiotris(acetic acid) betaine, S(CH2COOH)2(CH2COO), and 2,2′,2″-selenotris(acetic acid) betaine, Se(CH2COOH)2(CH2COO) DOI: 10.1016/j.molstruc.2016.12.067 -
Fatty acid достоверност 1,0
“(Sadeghi-Jorabchi, Wilson, 191 Belton, Edwards-Webb, & Coxon, 1991) mentioned, the decrease in the ratios of 192 cm-1 cm-1 Raman band at approximately 1700~1601 to the band at 1790~1713 or to the 193 cm-1 band at 1543~1382 indicated an incr”
Gao 等 - 2021 - Complementarity of FT-IR and Raman spectroscopies DOI: 10.1016/j.foodchem.2020.128754 -
Fatty acid достоверност 1,0
“Gloor were (i) the ratio between the fatty acid absorption and the ester In this work we aim to investigate the use of infrared spectroscopy absorption, (ii) the height of the total combined fatty acid and ester 1790cm-1, differences techni”
Interpersonal differences in the friction response of skin relate to FTIR measures for skin lipids and hydration DOI: 10.1016/j.colsurfb.2020.110883 -
Imide достоверност 1,0
“Polymers 2021, 13, x FOR PEER REVIEW 5 of 14 The remarkable signatures around 1790 cm-1 and 1769 cm-1 denote the asymmetrical and symmetrical stretching frequencies of imide carbonyl groups, respectively.”
Synthesis and In Vitro Antimicrobial Evaluation of Photoactive Multi—Block Chalcone Conjugate Phthalimide and 1,8-Naphthalimide Novolacs DOI: 10.3390/polym13111859 -
C c single bond достоверност 1,0
“These results are an indication that the nanotubes exist as at 1790 The stretching of the C-C bond from the phenyl”
Preparation and characterization of polycarbonate/multiwalled carbon nanotube nanocomposites DOI: 10.3762/bjnano.8.203 -
Water (H2O) достоверност 1,0
“cm-1 cm-1 ologically treated material, which is in agreement with what was found by Manivannan The band around 1790 and 1500 is attributed to the adsorbed water [43]”
Biological Characterization and Instrumental Analytical Comparison of Two Biorefining Pretreatments for Water Hyacinth (Eichhornia crassipes) Biomass Hydrolysis DOI: 10.3390/su13010245
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