Hi,
Thank you all for your suggestion. The sample I am using is Co59 standard K3CO(CN)6, which should give a sharp peak (line width 5 Hz) at 0 ppm. So large line width or huge chemical shift range should not be problem here. And I can see good tuning signal.
I called Agilent and they suggested I used the wrong 1/4 ware cable on the low band. My 94 MHz Co59 signal cannot pass through this cable. This surprised me since I can run Si29 (79 MHz), C13 (100 Mhz) and P31 (160 MHz) without any problem.
I ordered a new 1/4 wave cable anyway. I will let you know the results after I tried it again with the new cable.
Sheng
________________________________
From: Cai, Sheng
Sent: Wednesday, December 10, 2014 4:06 PM
To: ammrl_at_ammrl.org
Subject: Co59 NMR
Hi,
Did anybody run 59Co NMR before? I tried everything and it didn't work. I even got no signal from the standard K3Co(CN)6, which should give a sharp peak. My tuning is good and I am sure my probe is OK. Any trick I might be missing? Thanks.
Sheng Cai
Marquette University
Milwaukee, WI 53233
Received on Thu Dec 11 2014 - 11:13:41 MST