Tagged questions

how to simulate the impression of excitation of cpmg

0 0 123
answers votes views
Hi? recently I try to use the bloch equation to simulate the magnetization M's variation, i used the perfect 90-degr...
Posted: da hsu 1 Apr 18 at 18:51

Longer pulse length for conducting samples?

3 0 790
answers votes views
Hi, my 1H 90 deg pulses are always longer when I work with my samples that are electrically conducting. Is this a/the re...
Posted: Santhosh 1 / Updated: glass lizard 31 Aug 12 '12 at 12:24

33S NMR Experiment

1 1 619
answers votes views
Dear Everyone I´d like to run 33S-NMR experiments using a Bruker NMR spectrometer at 400 MHz buy I nedd the pulse seque...
Posted: Juan_Carlos 11 / Updated: Pete Gierth 151 Jun 15 '12 at 07:53

High Pressure NMR Samples

3 0 982
answers votes views
I need to run NMR on samples of anhydrous ammonia. The boiling point of anhydrous ammonia is -33.34 deg C. In order to...
Posted: grant 1 / Updated: Damodaran Krishnan Achary 21 Feb 28 '12 at 14:09

Simple 1H-NMR Assignment Query

4 1 964
answers votes views
Hi guys, sorry to be really cheeky and sign up simply to ask for help, but here goes. I've done a simple Grignard addit...
Posted: Brianstorm 11 / Updated: 3nath 11 Oct 26 '11 at 12:53

two triplets and no quartet?

3 1 1k
answers votes views
Hello all, I have spent approximately 4 hours trying to analyze an H NMR consisting of two doublets of doublets (pe...
Posted: Kelsey O'Dell 11 / Updated: sekhar Talluri 571 Mar 20 '11 at 11:29

Why is chemical shift range of 13C wider than of 1H nuclei?

6 3 3k
answers votes views
Why the chemical shift range of 1H nmr is ~20 ppm wheras for 13C nmr it is ~230 ppm? ...
Posted: sameer deka 31 / Updated: Yoan Monneau 136 Feb 15 '11 at 11:23

Inverted Spinning Sidebands

2 0 1k
answers votes views
Hello, My 1H MAS NMR spectrum comes out with the right spinning side band pointing up and the left one pointing down. ...
Updated: NMRUser61581 13 Jan 03 '11 at 10:04

J-Coupling In Proton NMR

1 1 2k
answers votes views
I'm currently a college student taking Organic Chem and I've no idea how to figure out the J-coupling for H-NMR and neit...
Posted: Scott 11 / Updated: Evgeny Fadeev 5371 Aug 07 '10 at 11:37

Are there ways to explain magnetic-field dependent chemical shift?

3 1 2k
answers votes views
Hi everyone, I was wondering whether anyone could help me to explain why the chemical shifts in my proton and carbon NM...
Posted: Guga Hollows 11 / Updated: David Cowburn 11 Aug 13 '12 at 08:36
10

questions tagged

1H-NMR

Newest questions are shown first.

posts per page103050

powered by CNPROG