Coupling constant | Spectroscopy | Organic chemistry | Khan Academy
6:10
YouTubeKhan Academy Organic Chemistry
Coupling constant | Spectroscopy | Organic chemistry | Khan Academy
Predicting splitting patterns based on the molecular structure. Finding coupling constants from the peaks in a multiplet, and using roofing to figure out which protons are splitting each other. Created by Jay. Watch the next lesson: https://www.khanacademy.org/science/organic-chemistry/spectroscopy-jay/proton-nmr/v/complex-splitting?utm_source ...
314.8K viewsJul 28, 2014
Coupling Constant Definition
Calculation of the Coupling Constant; This is a simple example that illustrates how to calculate the chemical shift of a doublet and how to determine the coupling constant (the J value) for such a signal. This example requires that you have the peak values for the two peaks of the doublet:6.7978 ppm7820 ppmMultiplicity:DoubletChemical Shift:Doublet; the average of the two peaks, the value of interestExample: (6.7978 ppm 6.7820 ppm)/2 = 6.79 ppmJ value:The coupling constant is measured as the s
Calculation of the Coupling Constant; This is a simple example that illustrates how to calculate the chemical shift of a doublet and how to determine the coupling constant (the J value) for such a signal. This example requires that you have the peak values for the two peaks of the doublet:6.7978 ppm7820 ppmMultiplicity:DoubletChemical Shift:Doublet; the average of the two peaks, the value of interestExample: (6.7978 ppm 6.7820 ppm)/2 = 6.79 ppmJ value:The coupling constant is measured as the s
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