2004
DOI: 10.1590/s0100-40422004000400025
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Esquema para interpretação de espectros de substâncias orgânicas na região do infravermelho

Abstract: Recebido em 25/7/03; aceito em 27/11/03; publicado na web em 27/05/04 FLOW CHART FOR INFRARED SPECTRA INTERPRETATION OF ORGANIC COMPOUNDS. This article decribes a simple and systematic method to interpret an infrared spectrum using a flow chart to elucidate the structure of a simple organic compound. It is aimed at undergraduate courses of organic chemistry to make beginners proficient. The proposed flow chart for infrared spectrum interpretation and characterization of organic compounds is suitable for theore… Show more

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Cited by 119 publications
(88 citation statements)
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“…39,40 FTIR spectrum of the AgNPs (Figure 7) showed the presence of two bands: 1,640 and 1,540 cm -1 , identified as amide I and amide II, respectively, which emerged due to the C=O axial deformation vibrations and the vibrations of the angular deformation of N-H in the amide bonds of the proteins. It was also possible to observe the presence of carboxylic acid OH deformation band at 2,665 cm -1 39 and stretch bands at 730 cm -1 (CH 2 -S-S, possibly referring to disulfide cross-links between the amino acid cysteine), 41 1,000 cm -1 (C-O), 29 1,811 cm -1 (C=O anhydride), 26 2,100 cm -1 (C ≡O), 42 2,326 cm -1 (NH 2 + ), 41 and 2,665, 3,600, and 3,751 cm -1 (O-H).…”
Section: Ftir and Raman Signaturementioning
confidence: 96%
“…39,40 FTIR spectrum of the AgNPs (Figure 7) showed the presence of two bands: 1,640 and 1,540 cm -1 , identified as amide I and amide II, respectively, which emerged due to the C=O axial deformation vibrations and the vibrations of the angular deformation of N-H in the amide bonds of the proteins. It was also possible to observe the presence of carboxylic acid OH deformation band at 2,665 cm -1 39 and stretch bands at 730 cm -1 (CH 2 -S-S, possibly referring to disulfide cross-links between the amino acid cysteine), 41 1,000 cm -1 (C-O), 29 1,811 cm -1 (C=O anhydride), 26 2,100 cm -1 (C ≡O), 42 2,326 cm -1 (NH 2 + ), 41 and 2,665, 3,600, and 3,751 cm -1 (O-H).…”
Section: Ftir and Raman Signaturementioning
confidence: 96%
“…3 Esta técnica se basa en las distintas absorciones de radiación infrarroja que manifiestan los diferentes grupos funcionales presentes en una molécula. 4 La región infrarroja del espectro incluye la radiación con número de onda comprendidas entre 12800 y 10 cm -1 lo que corresponde a longitudes de onda de 0.78 a 1000 µm, divididas en tres regiones denominadas infrarrojo cercano, medio y lejano. De las tres zonas del espectro infrarrojo, la región comprendida entre 4000 a 400 cm -1 (de 2.5 a 25 µm) es la utilizada en química orgánica para el estudio estructural de las moléculas.…”
Section: Análisis Espectroscópico Ft-irunclassified
“…A espectroscopia na região do infravermelho (IV) é uma técnica de inestimável importância na análise orgânica qualitativa, sendo amplamente utilizada nas áreas de química de produtos naturais, síntese e transformações orgânicas (LOPES; FASCIO, 2004).…”
Section: Resultsunclassified