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The course introduces the three most important spectroscopic methods used by chemists and biochemists to analyse the molecular and electronic structure of atoms and molecules. These are ultraviolet/visible (UV/Visible), infrared (IR), and nuclear magnetic resonance (NMR) spectroscopies. The content is delivered through short, focused, interactive screencast presentations, which are supplemented by formative quizzes to assess understanding of the key concepts presented. A wide range of exercises are provided to help students master each topic. Students can measure and analyse spectra online using a one-of-a-kind virtual spectroscopic laboratory. Summative quizzes completed during the course period are used for evaluation.
Syllabus :
1. Ultraviolet and Visible Spectroscopy
- Introduction
- What is spectroscopy?
- The nature and properties of electromagnetic radiation
- Example of energy calculation
- Energy levels: Molecular Orbital Theory - revision
- Molecular Orbital diagram for CO
- UV/Visible spectroscopy
- Example of Beer-Lambert calculation
- Transitions relevant to UV/Vis Spectroscopy
- Effect of conjugation on wavelength
2. Infrared Spectroscopy
- Infrared spectroscopy
- Vibrational frequency
- Example vibrational frequency calculation
- Energy levels and dipoles
- Vibrational modes
- Example IR spectra of organic molecules
3. Nuclear Magnetic Resonance (NMR) Spectroscopy
- NMR Spectroscopy Introduction
- Nuclear spin in an external magnetic field
- Spin and magnetisation
- Chemical shift
- More on chemical shift
- Analysis of proton spectra
- Spin-spin coupling
- Spin-spin coupling mechanism
- Carbon-13 NMR and pulsed methods
4. Final Assessment
