Understanding NMR (A2 Only)

Understanding NMR (A2 Only)
At the end of the lesson you will be able to explain the basic principles of Nuclear Magnetic Resonance (NMR) spectroscopy.
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Understanding NMR (A2 Only)
At the end of the lesson you will be able to explain the basic principles of Nuclear Magnetic Resonance (NMR) spectroscopy.

Slide 1 - Diapositive

What do you already know about Nuclear Magnetic Resonance (NMR) spectroscopy?

Slide 2 - Carte mentale

Basic NMR Principles
NMR spectroscopy characterizes organic compounds by providing detailed information about the positions and environments of hydrogen and carbon atoms.

Slide 3 - Diapositive

Overall spin
Only nuclei with an odd nucleon number, such as 1H and 13C, can be analyzed using NMR.

Slide 4 - Diapositive

NMR Theory
In the presence of an external magnetic field, nuclei with an odd nucleon number exhibit overall spin and can align with or against the field, creating different energy states.

Slide 5 - Diapositive

Nuclei in a magnetic field
Nuclei in the presence of an external magnetic field exhibit overall spin and can align with or against the field, creating different energy states.

Slide 6 - Diapositive

Energy difference and Energy gap
The energy gap between these states falls within the radio frequency range, and transitions between states result in signals on the NMR spectrum.

Slide 7 - Diapositive

NMR signals and Different chemical environments
Signals on the NMR spectrum vary depending on the chemical environment of the nuclei, displayed as chemical shifts on the x-axis.

Slide 8 - Diapositive

Chemical Shifts
Chemical shifts, denoted by δ in ppm, help identify specific environments of atoms within a molecule using reference tables.

Slide 9 - Diapositive

Chemical shift notation and Chemical shift tables
Chemical shift notation in NMR spectra is measured in ppm (parts per million) and can be compared to reference tables to identify specific environments of atoms within a molecule.

Slide 10 - Diapositive

Recap - Learning Goals
At the end of the lesson you will understand the information provided by NMR spectra and how it relates to the structure of organic compounds.

Slide 11 - Diapositive