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NMR Spectroscopy

NMR Spectroscopy. Chapters 19. Peak Shifts in NMR. e- in molecule is in mag. field e- circulate => produce secondary mag. field opposite in direction to B o *nucleus experiences mag. Field smaller than original B o . -nucleus is shielded

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NMR Spectroscopy

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  1. NMR Spectroscopy Chapters 19

  2. Peak Shifts in NMR • e- in molecule is in mag. field • e- circulate => produce secondary mag. field opposite in direction to Bo *nucleus experiences mag. Field smaller than original Bo. -nucleus is shielded -shielding related to e- density (plus exceptions)

  3. 60,000,400 100,000,400

  4. Isotropy – same in all directions Anisotropy – depends on orientation of molecule in magnetic field.

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