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3: Nuclear Magnetic Resonance Spectroscopy

Last updated

Jan 16, 2022
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- 2.4.11: What Does an IR Spectrum Look Like?
- 3.1: Introduction

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3.1: Introduction
3.2: ¹H NMR Spectroscopy
3.3: Chemical Shift in Proton Spectra
3.4: Integration
3.5: Multiplicity
3.6: More Complicated Coupling
3.7: NMR in Lab- Solvent Impurities
3.8: NMR in Lab- Monitoring Reaction Progress
3.9: NMR in Lab- Composition of Mixtures
3.10: 13C-NMR Spectroscopy
The 12C isotope of carbon - which accounts for up about 99% of the carbons in organic molecules - does not have a nuclear magnetic moment, and thus is NMR-inactive. Fortunately for organic chemists, however, the 13C isotope, which accounts for most of the remaining 1% of carbon atoms in nature, has a magnetic dipole moment just like protons.
3.11: Symmetry in Spectroscopy
3.12: Factors in Chemical Shift- Carbon Geometry
3.13: Factors in Chemical Shift- Electronegativity
3.14: More on Electronic Effects
3.15: Constructing Partial Structures in NMR Spectroscopy and Combined Structure Determination
3.16: More Practice
3.17: 2D NMR
3.18: Solutions to Selected Problems
3.19: Appendix

Thumbnail: A diagram of an aromatic ring current. $B_0$ is the applied magnetic field, the red arrow indicating its direction. The orange ring shows the direction of the ring current, and the purple rings show the direction of the induced magnetic field. (Public Domain; Benjah-bmm27).

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