Coupling constants Spin-spin coupling constants 10 Hyperconjugative interactions 8 Fermi contact 6 Nuclear magnetic resonance 6 Amino acids 4 Atoms 4 Chemical bonds 4 Couplings 4 Flow interactions 4 Halogen atoms 4 Hamiltonians 4 Hydrogen bonds 4 J coupling 4 Molecules 4 NMR coupling 4 Nitrogen 4 Paramagnetic spins 4 Paramagnetism 4 Qualitative analysis 4 Quantum optics 4 Quantum theory 4 Second orders 4 Spin coupling constants 4 Spin dynamics 4 Substituent effect 4 Sulfur compounds 4 Transmission mechanisms 4 hydrogen bond 4 1JCH and 2JCH coupling constants 2