Unanswered questions

BRUKER Fid data ordering

2 2 15366
answers votes views
Hi guys : This post is related to : qa.nmrwiki.org/question/83/where-to-find-technical-information-on-varian-and-bruke...
Updated: j 131 May 25 '10 at 11:45

Eliminating NOE restraints

1 1 5k
answers votes views
I have collected over 370 NOE restraints for a 38 AA peptide. Because I have less than 10 restraints per residue, I am ...
Posted: E V Clarke 11 / Updated: sekhar Talluri 621 May 23 '10 at 12:18

How to reference indirect dimensions in Topspin?

0 1 5k
answers votes views
Hello, When I process 3d data on topspin with the ft3d command, I get the three-dimensional spectra, but the chemical sh...
Posted: Gili 11 / Updated: Evgeny Fadeev 5771 Jul 26 '10 at 09:24

How to configure vnmr to save postscript files

1 0 5k
answers votes views
Hello, I know I've done this before but did not write the details down. How to make vnmr save postscript files? Normall...
Posted: Evgeny Fadeev 5771 / Updated: Gareth Morris 71 May 13 '10 at 01:28

How to remove baseline DC offset in Bruker EMX EPR spectra?

1 0 5k
answers votes views
Hello, I've noticed recently that our EPR spectrometer (Bruker EMX500) has a negative offset on the baseline and it bec...
Posted: Evgeny Fadeev 5771 / Updated: Alex Blumenfeld 11 May 12 '10 at 11:55

Why chiral(-*C-)centre attached Ethylene(-CH2-)group splits into two separate protons(or)peaks ?

1 1 5k
answers votes views
About chiral centre ...
Posted: RAM 21 / Updated: Evgeny Fadeev 5771 May 01 '10 at 17:48

How to determine E vz Z olefin isomer when proton resonances orverlap?

3 1 16667
answers votes views
We have an olefin, R1-CH=CH-R2 where proton resonances overlap. Is there a way to determine olefin isomer - E (trans) vs...
Posted: Evgeny Fadeev 5771 / Updated: Cleber Barreto 73 Jul 10 '10 at 08:07

How to best correlate Deuterium with other nuclei by NMR?

2 0 5k
answers votes views
Hello, I've been asked to solve a problem of assigning a positon of deuteration on a molecule, where structure of the de...
Posted: Evgeny Fadeev 5771 / Updated: kiscs kiscs 21 May 17 '10 at 16:43

Limit Testing by NMR?

3 1 9k
answers votes views
Is it possible to use NMR for limit testing of trace impurities in pharmaceutical drug substances? What are the conside...
Posted: Chris Kirchner 11 / Updated: sekhar Talluri 621 May 23 '10 at 11:49

How to assign (perturbed) resonances when structure is known?

1 0 5k
answers votes views
I had two problems like this one recently: have protein (in solution) of known general structure resonance assignments...
Posted: Evgeny Fadeev 5771 / Updated: Aleksandr Yakimov 11 Apr 25 '10 at 01:17
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