Basic One- and Two-dimensional NMR Spectroscopy

¹³C 13C NMR spectroscopy 13C NMR spectrum 13C nuclei acid amplitudes angle BB decoupling benzene bond carbon atoms carbon nuclei Carbon-13 NMR CH₂ CH3 groups Chapter Chem chemical shifts chiral compounds coordinate system corresponding coupling constants cycloalkanes d-values derivatives determined doublet effect electron electronegativity enantiomers energy levels Equation example experimental Fourier transformation geminal gives H and 13C H BB hydrogen atoms Larmor frequency M₂ magnetization vectors measured method methyl groups methylene methylene protons MHz H NMR molecule multiplets N₁ neuraminic acid NMR experiment NMR signals NMR spectroscopy NMR spectrum nuclear nuclear Overhauser effect observed obtained OCH3 peaks phase positions protons pulse sequence recorded relaxation resonance frequency result ring rotation sample Section shielding shown in Figure shows singlet solvent spec spectra spin system spin-echo spin-lattice relaxation structure substituents t₁ T₂ technique temperature tion transitions trum two-dimensional v₁ values vector diagrams