Hello Spinlanders,
A belated happy May Day!
Misplaced parameters for observing 195 Pt NMR on our AC-200 system. Spent an unfruitful day attempting to reconstruct parameter set
yesterday. Would appreciate any help that you folks can offer. Used
Na2PtCl6.6H2O in D2O, ca. 136 mg in 0.6 ml.
Our VSP-200 probe has following digital tuning and matching listings for
13C and 2H:
MHz Tuning Matching
13C 50.323 7995.5 961.5
195Pt 42.930 7787* 989*
2H 30.722 7444 793.5
* (by extrapolation)
Tried to set SY=42.930 MHz, however, SY shows as 42.03 MHz.
O1=SR=0, SF=SF0=42.930, PW=10, RG=100, SW=50,000,
RD=2. Matching unit set to 3, BB preamp set to C.
When above parameters are used, transformed data contain only random,
non-reproducible, out of phase spikes. Tried with and without proton
decoupler. Same result. Proton data is good indicating decent shim
set. Will post summary.
Thank you and kind regards,
Lawrence
Lawrence Byrnes,
NMR Laboratory Manager,
Numare Spectralab Incorporated
Research Director,
The Schoenenberg Institute of Molecular Spectroscopy
10 Summit Avenue, Building #6, P.O. Box 96,
Berkeley Heights, NJ, 07922-0096,
Voice: 908-665-0066
Fax: 908-464-4192
E-mail: numare_at_eclipse.net
Web: http://www.eclipse.net/~numare/
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Received on Thu May 02 2002 - 10:59:52 MST