DEPT Distortionless Enhancement by Polarization Transfer Spectra

5 4 3 3 3 DEPT (Distortionless Enhancement by Polarization Transfer) Spectra 

The DEPT experiment is generated from available computer software with the following concomitant pulse sequence 

There are three different 0y pulses applied to 1H with different values of pulse angle (0, = n/4 02 = n/2 0, = 3n/4) which generate three basic spectra [0,], [02] and [03]. 

The delay, r = (2J) 1 with J = 150 Hz, is selected from the average J values (13C— H coupling constants) found for lignin structures. The three pure subspectra CH, CH2, and CH3, are obtained from appropriate linear combinations of the three basic spectra  

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