Measuring T1 for a low concentration (1mM) compound in water.

0 0 360
answers votes views
Hi, I'm trying to measure T1 for a compund at 1mM in water using t1ir. Seeing how my concentration is so low, phasing m...
Posted: gravatar 9 / Updated: Arkadiusz Leniak 120 Sep 23 at 01:16

TOCSY of peptide in micelle

0 0 35
answers votes views
Hi, I am a PhD student starting in NMR and I have two questions. I have a problem with a TOCSY and natural abundance ...
Updated: paul atray 1 Sep 17 at 10:16

au for 1H and 31P with iexpno and ssleep for kinetics

1 0 241
answers votes views
hi there. I want to establish an au with the following content: I want to measure 1H and 31P make ssleep (userdefined)...
Posted: charlez miller 1 / Updated: Ulrich Haunz 169 Sep 22 at 06:25

setting Z0 on agilent nmr equipment

0 0 47
answers votes views
I use an agilent 400 MHz equipment. Would like to know how to set the Z0 to around -3500 ...
Posted: olatomide fadare 1 Sep 11 at 16:15

polymer NMR

1 0 83
answers votes views
Why are NMR peaks of flexible polymers usually broad? Is it due to the intramolecular proton J coupling among different ...
Posted: timlo 1 / Updated: Arkadiusz Leniak 120 Sep 09 at 10:05

Which Bruker HSQC program do you use?

5 0 379
answers votes views
Hello, could you tell me which HSQC and E-HSQC program are recommendable ? These are Bruker HSQC pulse programs: hsqcp...
Posted: lithiumamide 1 / Updated: RuudA 11 Sep 10 at 11:46

Oxford Instruments 2.2K 800/63 pumped magnet

1 0 385
answers votes views
Dear all, our Oxford 800 Mhz pumped magnet is monitored using a windows 95 pc. The autodial is still running but we wer...
Posted: Ruud 1 / Updated: RuudA 11 Sep 25 at 03:37

Spam that is lately spawning in wiki

2 3 307
answers votes views
Greetings, I want to ask if someone knows what's going on in here with this spam about FIFA, some online games, etc. ? ...
Updated: Arkadiusz Leniak 120 Sep 23 at 13:08

Tool for Subsampling Uniformly-Acquired Data to Mimic NUS Spectra

1 0 2k
answers votes views
Hello all, I have several 2D and 3D data sets acquired using Bruker spectrometers in the standard uniform sampling fash...
Updated: ChemMJW 99 Aug 23 at 20:43

what does autoshim in the topspin bsms do?

1 0 182
answers votes views
Hi, in the bsms gui there's an autoshim button. What does this function do exactly? Is it similar to topshim or is it a...
Posted: gravatar 9 / Updated: Ulrich Haunz 169 Aug 20 at 06:16

Tool to extract several NMR spectra into text file format?

2 0 150
answers votes views
Hi As a newbie in the NMR world I hope you guys can help me out with a simple Q: I have 104 1D spectra I would like to t...
Posted: Michael 1 / Updated: John Hollerton 96 Sep 10 at 03:36

15N 90 degree hard pulse calibration

4 0 257
answers votes views
Greetings, I want to ask for some advice in matter of 15N hard pulse calibration on Bruker machines. I'm working on Avan...
Updated: Arkadiusz Leniak 120 Aug 25 at 04:18

vnmrj spectra in mnova

3 0 210
answers votes views
I have been trying to open varian vnmrj spectra in mnova software to workup the spectra, but I keep getting error messag...
Posted: Carolyn Shetter 1 / Updated: Ulrich Haunz 169 Aug 13 at 05:09

Topspin 2.1 error message with Windows 7 OS

2 0 403
answers votes views
Hi all, I have been running TopSpin 2.1 on my Windows 7 32-bit OS for the last few years and now am getting this annoyin...
Posted: Olivia 1 / Updated: John Hollerton 96 Sep 10 at 03:46

why choloroform gives a negative triplet instead of a positive

3 0 1k
answers votes views
Hello, why choloroform gives a negative triplet instead of a positive(just one hydrogen on the carbon) in DEPT 135. Can ...
Updated: zikoooo 3 Jul 29 at 01:20

How to integrate CDCl3 (d-chloroform) peak area which is overlapped with other peaks?

4 0 1k
answers votes views
Hi All, I would like to get suggestion about how to integrate the peak area of CDCl3 which is overlapped with other pea...
Posted: Jiping Yang 1 / Updated: John Hollerton 96 Sep 10 at 03:53

Air dryer system issues

2 0 2k
answers votes views
We have a pressure-swing adsorption air dryer that is identical to the one shown here on the NMR wiki (Balston 75-20, cu...
Posted: slongwell 3 / Updated: Jerry Hirschinger 189 Jul 23 at 06:50

simple stddiff parameters

1 0 933
answers votes views
Hi, I'm working on a bruker avance 400 spectrometer and using topspin version 1.3 software. I want to get a std-nmr (sat...
Updated: nfromdicle 1 Jul 12 at 05:56

Watergate spikes around solvent

0 0 257
answers votes views
Hi, When I use my watergate I get symmetrical spikes around the residual water signal. Is there a way of minimizing the...
Updated: gravatar 9 Aug 20 at 07:47

167ppm CH of a indole

1 0 291
answers votes views
I have a proton value at 8.07ppm and carbon 167ppm correlate to a CH proton I think it's a proton at 3 position of a ind...
Posted: din 1 / Updated: VVK 61 Jul 08 at 04:34

how do you use topshim 3d in topspin?

2 0 1k
answers votes views
Hi, when I try to use topshim 3d i get an error message saying that it can only be used for 1H although 1H is what I use...
Posted: gravatar 9 / Updated: Arkadiusz Leniak 120 Jul 07 at 07:39

Translating Varian to Bruker, "phase=1,2"

1 0 955
answers votes views
I'm trying to translate a Varian pulse sequence into a Bruker pulse program. For the Varian Inova sequence with the par...
Posted: Craig Grimmer 31 / Updated: vltr 1 Jul 14 at 13:17

INADEQUATE EXPERIMENT WITH BBI PROBE?

4 0 447
answers votes views
Is it possible to obtain this experiment with a BBI 400 MHz probe? All the tries I have made they have been unsuccessful...
Posted: Gohuma1 1 / Updated: Arkadiusz Leniak 120 Jun 26 at 19:35

Software to simulate pulse sequences

1 0 325
answers votes views
Hi, I'm interested in software for windows or linux that simulate the effect of pulses, delay AND gradients using the pr...
Posted: marcs 11 / Updated: Bharathwaj 112 Jun 22 at 08:15

Topspin3.2 deconvolution, border peaks are cutted off

1 0 302
answers votes views
Greetings, I've some annoying issue with Topspin and deconvolution. No matter what I'm trying to do, border peaks are a...
Posted: Arkadiusz Leniak 120 / Updated: Ulrich Haunz 169 Jun 16 at 07:48

gradients for 195Pt

2 0 276
answers votes views
Dear colleagues! tell me please how to calculate the gradients for carrying out 2D experiment with 195Pt (HMBC, HSQC)? ...
Updated: OLEL 1 Aug 15 at 03:17

How can you read a FID dile with topspin?

2 0 327
answers votes views
Hi, I found a spectrum I'm interested in on the hmdb database, say for example at the end of this page http://www.hmdb....
Posted: gravatar 9 / Updated: Arkadiusz Leniak 120 Jun 14 at 02:00

Processing of spectra in Bruker Topspin

0 0 1k
answers votes views
Can anyone suggest important parameters need to be optimized for 3DNMR data processing and correct phasing of cross pea...
Updated: Arun Gupta 11 Jun 08 at 03:04

TopSpin: 3D experiment with vc list

2 0 1k
answers votes views
Question about how to make a 3D experiment in which one of the dimensions is a variable counter (vc) list. I'm using Top...
Updated: DaanMR 1 Jun 05 at 08:26

why is the number of scans in watergate a multiple of 8?

2 0 1k
answers votes views
Hi, In the p3919gp the number of scans is a multiple of 8 which makes optimizing this experiment a bit of a pain. can a...
Posted: gravatar 9 / Updated: Arkadiusz Leniak 120 Aug 20 at 00:32
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