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 neither my professor/TA's/book are being helpful. Does one apply the n+1 rule first to figure the number of peaks and then apply the various couplings to each peak?
I understand that if a single H has two non-equivalent neighboring protons, you'd get a doublet of doublets instead of a triplet. But say, for example, how would I figure out the signal for the hydrogens attached to the terminal C of the double bond in 1-pentene ( the first carbon in, CH2=CHCH2CH2CH3)?
Thank you very much for your time.
Hi Scott This was answered in question 14 of this wiki and I cut and paste two papers recommended by Evgeny: A Practical Guide to First-Order Multiplet Analysis in 1H NMR Spectroscopy by Hoye, Hanson and Vyvyan A Method for Easily Determining Coupling Constant Values: An Addendum to “A Practical Guide to First-Order Multiplet Analysis in 1H NMR Spectroscopy” by Hoye and Zhao (2002)
If you start there you should be able to work through first order spectra.