MQMAS shearing with RMN(fat):
Contribution of Y. Millot




Home and Applets > Pulse Program > XwinNMR 2.6, ASX, MSL > MQMAS Data Processing: Shearing 2D Map

7 - Shearing 2D map

Shearing consists in applying a phase correction of +k*IN6 to the 2D echo map and a phase correction of -k*IN6 to the 2D anti-echo map before the F1 Fourier transform. For aluminum-27 and 3QMAS experiment, k = 19/12.
The final 2D MQMAS spectrum will display isotropic peaks along the F1 dimension and their anisotropic MAS line shape along the F2 dimension.

(1) We recall the three echo files by selecting the menu items:

Data/echo

(2) We set the value of the phase correction by selecting the menu items:

Process/Phase/Parameters...

Phase correction parameter form

The form of Phase Correction Parameters appears. In its 2nd Dimension of 2D Data area, we set the text fields Zero and t to 0 and the text field delta t to +79.16u. This value is that of +k*IN6, u stands for microsecond.

(3) We perform the shearing or phase correction by selecting the menu items:

Process/Phase/Phase Correct

Intensity plot of the sheared 2D echo map

Figure 1 Intensity plot of the sheared 2D echo map:
The horizontal axis is labeled in frequency unit.
The vertical axis is labeled in time unit.



We repeat the above procedure with the anti-echo files. The only change is the sign of the value of delta t: -79.16u corresponding to -k*IN6.

Intensity plot of the sheared 2D anti-echo map

Figure 2 Intensity plot of the sheared 2D anti-echo map:
The horizontal axis is labeled in frequency unit.
The vertical axis is labeled in time unit.


 

(top)

[Contact me] - Last updated December 16, 2012
Solid-state NMR bibliography for
Aluminum-27
Antimony-121/123
Arsenic-75
Barium-135/137
Beryllium-9
Bismuth-209
Boron-11
Bromine-79/81
Calcium-43
Cesium-133
Chlorine-35/37
Chromium-53
Cobalt-59
Copper-63/65
Deuterium-2
Gallium-69/71
Germanium-73
Gold-197
Hafnium-177/179
Indium-113/115
Iodine-127
Iridium-191/193
Krypton-83
Lanthanum-139
Lithium-7
Magnesium-25
Manganese-55
Mercury-201
Molybdenum-95/97
Neon-21
Nickel-61
Niobium-93
Nitrogen-14
Osmium-189
Oxygen-17
Palladium-105
Potassium-39/41
Rhenium-185/187
Rubidium-85/87
Ruthenium-99/101
Scandium-45
Sodium-23
Strontium-87
Sulfur-33
Tantalum-181
Titanium-47/49
Vanadium-51
Xenon-131
Zinc-67
Zirconium-91



Copyright 2002- pascal-man.com. All rights reserved.