Tagged questions

h2bc experiment

2 1 1k
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Hello nmr wikier I want to run pulprog h2bcetgpl3 on bruker instrument using adiabiatic shape pulse crp60comp.4 I determ...
Posted: feroon 21 / Updated: zablociak 11 May 30 at 13:21

J-Coupling In Proton NMR

1 1 3k
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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 5571 Aug 07 '10 at 11:37

Setting up J-HMBC experiment (hmbcetgpjcl2nd)

1 1 2k
answers votes views
Hi, i'm trying to set a J-HMBC experiment to measure coupling constant J2-J3 CH (hmbcetgpjcl2nd) to determine stereochem...
Posted: Cleber Barreto 63 / Updated: Evgeny Fadeev 5571 Jul 12 '10 at 13:50

What is the origin of positive and negative coupling constants in NMR?

1 2 5k
answers votes views
When positive and negative coupling constants occur in NMR? and why? What are the spin states of the nuclei and the bond...
Posted: Ligia 21 / Updated: sekhar Talluri 601 Jun 13 '10 at 05:47

Is there a way to measure scalar coupling when lines are broad?

1 1 1k
answers votes views
Hello, we have a peptide where amide peaks are broad and there is no hint of observable coupling with HA protons (no dis...
Posted: Evgeny Fadeev 5571 / Updated: jkurutz 111 Mar 16 '10 at 14:59
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