We have try to characterized some plant derived compounds by spectroscopic analysis. By comparing the 1H NMR data of the compounds with reported data the compounds were identified. We have compare our results with the attached paper.
So now how can I calculate my free induction decay (FID) of 1H NMR?
Do you want to plot FID ?
You can use ifft function of MATLAB or GNU Octave for inverse Fourier transformation.
I agree fully with John Carney - anf if you for some reason, that neither of us understand, still wish to calculate time constant of your FID this can be obtained from the linewith of the NMR signal. Look up any good NMR textbook if you wish to learn how.
I thought I was the one who didn't understand :-)
Like said, your question is not clear.
Dear all,
Thank you for your answer. Actually I want the FID plot for publication. I have attached the paper which does not show the FID plot. This just only show the conventional 1H NMR data in typical format in the frequency domain. But I need to plot FID plot.
It is unusual for a publication to request the FID! As others have pointed out the acquired raw data is the FID ( so you have it anyway) but it is meaningless really - apart from the influence of shimming and acquisition variables. The frequency domain data is not just conventional but much more useful and can be compared with tabulated or published data. This is not so with the time domain data.
It is indeed very odd and unusual to plot the FID, since based on what your goal is, there is nothing the FID can tell you which is the FT spectrum can't (other than some unimportant details)
Anyway, most processing software can display the FID, including Bruker TopSpin, MestreNova. ACD Labs. SpinWorks.
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