Gaussian cascades

G4 Gaussian Cascade Excitation only, Pure-phase 7.8 25.4 [43]... 

Figure 7.18. Traces from the 2D absorption-mode 7-resolved spectrum of menthol 7.1. (a) A region from the ID proton spectrum, (b) the 02 projection of the titled 2D spectrum showing proton-decoupled resonances and (c) the corresponding traces through the/i multiplets in the 2D spectrum. The multiplets for protons 3 and 4 are not fully decoupled for reasons described in the text. The data were acquired with a total acquisition time of 1 s in both t2 and fi using a 60Hz/i window. The selective 180° pulse was a 50 ms Q3 Gaussian cascade, and the gradient strength was 1% of the maximum 53 G cm 0 The broadband 180° pulses were BIPs (720.50.20) applied for 100 Xs at a Bi field strength of 20 kHz.

G3 Gaussian cascade Inversion only, pure phase 3.6 23.1 [51]... 

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