dept.m

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DEPT pulse sequence from the schematic in the paper by Doddrell, Pegg, and Bendall (https://doi.org/10.1016/0022-2364(82)90286-4).

Syntax

    fid=dept(spin_system,parameters,H,R,K)

Arguments

   parameters.sweep          [F1] Sweep width in Hz

   parameters.npoints        [F1] number of points

   parameters.spins          {F1,F2} nuclei, e.g. {'13C','1H'}

   parameters.J              working J-coupling in Hz
 
   parameters.beta           the angle used in the selection
                             pulse, radians

   H - Hamiltonian matrix, received from context function

   R - relaxation superoperator, received from context function

   K - kinetics superoperator, received from context function

Outputs

    fid  - free induction decay

Examples

A DEPT135 spectrum of strychnine (examples/nmr_liquids/dept_strychnine.m) appears below.

Dept strychnine.png

Notes

DEPT135 yields spectra with CH and CH3 signals in opposite phase to CH2 signals; DEPT90 yields spectra with only CH signals; DEPT45 yields spectra with positive CH, CH2, and CH3 signals; quaternary carbons do not appear.

See also

inept.m, deptq.m, hsqc.m, hmqc.m, hmbc.m, dilute.m


Version 2.3, authors: Andrew Porter, Ilya Kuprov