I apologize for the cross-posting.
We have a Bruker WM-360 (360MHz for 1H), widebore. I've tuned one of our
5mm BB probes to Pt (but can only get a 5:1 tune as measured by O-scope).
Pt(II) has a spin 1/2, relaxation times near 1.3-0.5 sec, but a 5000ppm
window.
Using a 1.0 M K2PtCl4 in D2O sample, I tried to obtain a reference peak.
Parameters were: SW 10000Hz, PW 10us, RD 2s, RG 200, PR H 1 (we have a 2 bay
preamp, so the BB preamps were plugged into both slots), SF and SY were set
correctly, SI 16K. The reflected signal was >20Watts, even though the probe
was tuned as best as it could be by O-scope. After 64 pulses, we didn't see a
thing except for noise.
Does anyone have the appropriate parameters for a Bruker (using DISNMR on
an ASPECT 3000) system? We desperately want to do Pt, Cd, and maybe Pd NMR
(though we know the problems with Pd NMR.) ANY help would be appreciated.
Thanks, in advance,
Mike
Michael D. Mosher
Assistant Professor / Manager NMR Lab
Department of Chemistry
University of Nebraska at Kearney
Kearney, NE 68849-1150
Ph: (308) 865-8491
mosherm@platte.unk.edu