Concentration-dependent signal fine splitting

5 2 7k
answers votes views
Hi, I have synthesized coproporphyrin II tetramethyl ester and taken a 1H NMR in CDCl3: http://illumina-chemie.de/uplo...
Posted: Jan Hartmann 33 / Updated: Gareth Morris 71 Mar 19 '13 at 02:54

Gsim 2D transformation (TopSpin)

3 0 4k
answers votes views
Hello. Anybody can use Gsim for 2D liquid spectra transformation? I can not transform correctly the TopSpin .ser files....
Posted: Attila 1 / Updated: Ulrich Haunz 210 Mar 11 '13 at 01:51

1h detected 3d in solids

2 0 3k
answers votes views
I am trying to set up a 3d 1h detected exp in solid. working on 700 MHz spectrometer,with a 3.2 mm probe. normal zg on 1...
Posted: anupc 1 / Updated: sekhar Talluri 621 Apr 07 '13 at 11:38

Tilted counters in 2D spectrum

1 0 3k
answers votes views
Hi, I recently run 195Pt-1H HMBC from one platinum compound with phosphorous and methyl group, unfortunately the counte...
Posted: Hamidreza Samouei 11 / Updated: Ulrich Haunz 210 Feb 21 '13 at 01:31

NOE help, pulse shapes, pbox

1 0 4k
answers votes views
Ok, let's face it. I don't know what I'm doing. I'm a separations chemist running our NMR. sigh. Anyway, I have been co...
Posted: CaymanDave 11 / Updated: Ulrich Haunz 210 Feb 21 '13 at 01:41

Which minimum distance between two magnets?

4 0 8k
answers votes views
Dear all, how do you determine the minimum distance between two high-field magnets? Is it that their 5-gauss lines mus...
Posted: oxy 31 / Updated: John Hollerton 96 Apr 22 '13 at 05:56

spinning problem on varian probe

2 0 12473
answers votes views
We are using a Varian300autoSW probe, which had previously worked well with no problems spinning samples. We had switche...
Posted: quinn best 1 / Updated: Miguel 1 Feb 09 '18 at 06:48

topspin peak list file format

2 0 6k
answers votes views
I am trying to parse a "peaks" file (generated by topspin) and convert it from binary to ascii, but couldn't find its fi...
Posted: badgerNMR 1 / Updated: John Hollerton 96 Apr 16 '13 at 08:13

Error in intergration of NMR peaks

1 0 6k
answers votes views
I have a question regarding the quantification of the error in peak integrals due to noise. I have a series of spectra ...
Posted: Daan 11 / Updated: Jerry Hirschinger 199 Feb 18 '13 at 13:23

Relaxation time of adenine H2

1 0 3k
answers votes views
Could anyone tell the reason why adenine h2 has a longer T1 and T2 than the other prontons in nucleic acid? It would be ...
Updated: yuan 1 Jan 13 '13 at 22:36
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