I am trying to analyse NMR peak width by fitting mixed Gaussian - Lorentzian shapes in TopSpin. In the results file the last column says %Lor.
chisq.
This column usually displays two sets of numbers vertically stacked. One is always of the order 1exp(16) while the other is 100.00 I am unable to find out what these two numbers signify. Can anyone please elaborate what these denote ?
Dear NMR colleagues,
I also know this "step-like" cuts of fitted peaks obtained with ldcon/dcon...I always suspected that there is a "hidden parameter" in the algorithms (Clemens?) preventing that the fitted lines are added/used/plotted in a broad enough window. The figure would look much nicer if the fitted amplitude of the peak in the center would be used in the complete spectral window and not be cut at 3.12 ppm. But I do not know whether this only is a graphic or really a numerical problem (resulting in wrong integrals/amounts of materials).
Kind regards
Alfred
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