NMR spectroscopy#

Nuclear magnetic resonance: Larmor frequencies and the chemical shift, first-order spin-spin coupling multiplets (the n+1 rule and a doublet of triplets), the Karplus dihedral-angle dependence of vicinal couplings, and Fourier-transform NMR from a free-induction decay.

Spin-spin (J) coupling and the n+1 rule: ethanol’s triplet/quartet and a doublet of triplets

Spin-spin (J) coupling and the n+1 rule: ethanol's triplet/quartet and a doublet of triplets

Nuclear magnetic resonance: Larmor frequencies and the field-independent chemical shift

The Karplus relation: vicinal 3J(H,H) coupling as a function of dihedral angle

Fourier-transform NMR: from a free-induction decay to a spectrum