Unanswered questions

Varian VNMRJ 2.2D standard experiments

3 1 6k
answers votes views
Hey folks, I was wondering if anyone else has had any issues with the experiments/pulse sequences that came standard in ...
Posted: CaymanDave 11 / Updated: Bharathwaj 112 Nov 09 '12 at 08:16

Translating 31P NMR references

2 1 6k
answers votes views
Hello, I am trying to compare different 31P chemical shift data from a variety of literature sources. However, each of...
Posted: David Condon 11 / Updated: sekhar Talluri 621 Apr 06 '13 at 11:45

why we are seeing negative PREs in paramagnetic relaxation enhancement experiment?

0 1 2k
answers votes views
Hi NMR Wiki users, I'm using two point method(Marius Clore and Junji Iwahara methods) to measure the PREs, but in my ex...
Posted: Kris 11 Dec 11 '12 at 07:48

Lock 'lost' on Bruker 400MHz NMR

1 1 9k
answers votes views
I had just finished refilling the nitrogen and powering up the NMR after the holiday shutdown and went through the norma...
Posted: Norman Chu 11 / Updated: Roja 26 Jan 07 '13 at 16:11

sign up for NMR wiki

2 1 2k
answers votes views
Hi! I have a problem signing up at the NMR wiki. I am met with this screen. There is no user creation possibility. ...
Posted: Troels Linnet 21 / Updated: Evgeny Fadeev 5771 May 15 '13 at 18:21

How to interprete TALOS predictions

0 1 1k
answers votes views
Dear all, Although my first question, remained unanswered, I still stay optimistic hoping this one will find its way t...
Posted: Yar 13 Jul 02 '13 at 08:49

The echo trajectory for spin 3/2

0 1 1k
answers votes views
For spin ½ The echo trajectory M(t ) fits well to the function : M (t) =M0 * EXP (-t/T) * COS (pi * j * t) (t: sp...
Updated: ghNMR 11 Jul 26 '13 at 08:36

Topspin 3.2.1 - 1D TOCSY in with differing mixing times

4 1 8k
answers votes views
Hello, I work a lot with compounds containing numerous carbohydrate groups. Therefore I use frequently 1D-TOCSY experim...
Posted: zablociak 21 / Updated: Alain Pagelot 1 Jun 10 '14 at 02:38

An accurate way to calibrate gradients?

1 0 7k
answers votes views
What is a good way to calibrate PFG? How do you prepare the most suitable sample for the calibration? ...
Posted: Evgeny Fadeev 5771 / Updated: Adolfo Botana 91 Jul 01 '09 at 09:35

How to set up 15N direct detection on UnityInova?

3 0 8k
answers votes views
Has anyone recorded directly detected 15N spectra on UnityInova? We have a triple resonance HCN probe. The sample I've u...
Posted: Evgeny Fadeev 5771 / Updated: Andrew Fowler 96 Jul 30 '10 at 06:01
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