Difference between H 50 W and X 100 W Amplifiers

2 0 3k
answers votes views
We have been trying to get a 2D H-F experiment to work using the X 100 W amplifier on our Bruker NMR, but can't get it t...
Posted: ysuh 1 / Updated: Kirk Marat 711 Jun 14 '16 at 11:55

When to use 'BLKGRAD' and 'UNBLKGRAD' in a bruker pulse sequence ?

1 0 5k
answers votes views
I'm trying to modify some pulse sequence on bruker 400, and is confused with the use of 'blkgrad' and 'unblkgrad'; and ,...
Posted: Yuan yaping 1 / Updated: Kirk Marat 711 Jun 14 '16 at 11:44

2D-NOESY for macromolecules

0 0 2k
answers votes views
Hi, NOESY is very interesting method bet I have a problem. We are working with polymethacryles (MW about 20 000-30 000 ...
Posted: AnnaLT 1 Aug 24 '16 at 22:32

FILTERATION OF SAMPLE

1 0 3k
answers votes views
Hello all, can i filter sample by passing the sample through a cotton? I think may be some of compound in cotton dis...
Posted: satar 3 / Updated: Ulrich Haunz 210 Sep 12 '16 at 05:56

unresolved signals

0 0 2k
answers votes views
Hi all We know that H NMR of paramagnetic sample or complex, is very broad with a bad signal to noise ratio. Do you...
Posted: satar 3 / Updated: Ulrich Haunz 210 Sep 19 '16 at 06:51

Vnmr spectrum file

1 0 3k
answers votes views
Hi, I am working on software for NMR assignment and one of the options to implement is import Varian spectra into our ap...
Posted: _mtd_ 1 / Updated: Ulrich Haunz 210 Sep 19 '16 at 06:59

qNMR calculation

1 0 13053
answers votes views
I am currently working on the qNMR concentration of compounds X in commercial samples: The following is my scenario I...
Posted: KONG KA LING 1 / Updated: Ulrich Haunz 210 Oct 13 '16 at 06:38

NOE and strength of dipolar coupling

1 0 3k
answers votes views
Is NOE observed even if molecular motion averages out the dipolar coupling between two spins. ...
Posted: visi 1 / Updated: Kirk Marat 711 Oct 26 '16 at 15:01

Lock problem on Bruker Avance 600 MHz

1 0 6k
answers votes views
After a energy failure (cryoprobe started to warm up) I cannot establish lock (similar to http://qa.nmrwiki.org/question...
Posted: Fabio de Moraes 1 / Updated: aaaeee 1 Apr 12 '18 at 12:47

Relaxation rate of bulk (pure) water at high frequencies

1 0 3k
answers votes views
Hi all, Does anyone know if NMR relaxation rates of bulk (pure) water has been measured experimentally at several hundr...
Posted: Gyro 1 / Updated: Jerry Hirschinger 199 Jul 21 '16 at 05:08
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