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Mandelshtam, Vladimir A.; Taylor, Nathan D.; Hu, Haitao; Smith, Mari; Shaka, A.J.
Chemical physics letters, 05/1999, Letnik: 305, Številka: 3Journal Article
Application of the filter diagonalization method (FDM) to the spectral estimation of purely phase-modulated 2D-J NMR data is described. It is shown that obtaining an entire 2D line list of spectral parameters is not a prerequisite for constructing a spectral estimate of the data. Common problems with 2D FT analysis, such as phase-twist lineshapes, spectral broadening from the time-frequency uncertainty principle, and vanishing phase-sensitive 45° projections, can be ameliorated using 2D FDM. Averaging over several different FDM calculations improves the spectral presentation. Examples are shown with complex spectra obtained using only a handful of time increments.
