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Jonathan9303 11-03-2005 01:11 PM

NMR what is the resonance frequency of 1H nuclei if...?
 
you have just ran a H NMR spectrum of a compound on spectrometer with a 9.4T magnet, and the spectrum contains a peak at 3 ppm.also what is the chemical shift of these nuclei in HzThank you

cat lover3953 11-03-2005 01:11 PM

NMR what is the resonance frequency of 1H nuclei if...?
 
Chemical shift is reported in ppm, but the coupling constants are reported in Hz.So the only thing you have to be concerned about is the number of Hertz for each one ppm, and that helps you determine the coupling constant.

AlisonM 11-03-2005 03:55 PM

NMR what is the resonance frequency of 1H nuclei if...?
 
A 9.4T NMR machine operates at about 400 MHz for 1H NMR (commonly 400.13 MHz, but not always), so a peak at 3 ppm occurs at about 1200 MHz (1200.39 MHz if you take the operating field to be 400.13 MHz).<br />
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