Hi everybody,
I have a somewhat strange problem. I'm running a 3D noesy-hsqc and I'm
having trouble with the phasing. The problem is that the phase correction
of f3 (the direct dimension) is different in the f2/f3 plane and the f1/f3
plane. When processing the 3D, it's not possible to find a correct phase
for f3. The best phase corrections to use are in between the "f2/f3" f3
phases and the "f1/f3" f3 phases.
I think something is wrong with the pulse sequence, but I can't see what
it might be. I get the same effect with a standard version, and a
gradient-selected sensitivity-enhanced version.
If I run a 3D noesy-hmqc, it phases correctly.
Has anyone else seen anything like this or does anyone know how this is
possible?
-Robert
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Robert Peterson, Ph.D.
Facility Manager
MBI-DOE Biomolecular NMR Facility
UCLA Dept. of Chemistry and Biochemistry
phone: (310)825-1816
fax: (310)825-0982
peterson_at_mbi.ucla.edu
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Received on Thu May 16 2002 - 14:24:52 MST