A procedure for obtaining pure absorption 2D J-spectra: application to quantitative fully J-decoupled homonuclear NMR spectra.
The phase-twisted lines, resulting from a double complex Fourier transform, can greatly alter the quality of two-dimensional spectra. This problem, which is generally overcome by experimental procedures (requiring twice as much time as a standard measurement), is inevitable in the two-dimensional J-resolved experiment. This experiment is revisited theoretically and a postprocessing treatment, leading to pure 2D J-spectra, is deduced. Quantitative fully J-decoupled homonuclear spectra are accordingly obtained by means of a projection onto the F2 axis after a 45 degrees tilt.
Mutzenhardt
P
P
Faculté des Sciences, Université Henri Poincaré, Vandoeuvre-lès-Nancy Cedex, 54506, France.
Guenneau
F
F
Canet
D
D
D000465:Algorithms; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D005583:Fourier Analysis; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D008962:Models, Theoretical