chemical shift and ppm values in 1H NMR spectroscopy
Автор: Chem Help ASAP
Загружено: 2019-09-26
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In NMR spectroscopy, chemical shift refers to the position a peak occupies on the x-axis. Chemical shift is referred to in terms of ppm values. In 1H NMR, sp3-C-Hs normally have a chemical shift of 5 ppm or lower. sp2-C-Hs have a shift of 5 ppm or higher. Alcohols are in the range of 1-5 ppm, while amines are 1-3 ppm. Carboxylic acids are in the 10 to 13 range.
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