Ultraviolet/Visible Spectroscopy

Outline

  1. Background Information

    1. Basics of Ultraviolet Light Absorption

    2. Terminology

    3. Laws of Light Absorption

    4. Measurement of the Spectrum

    5. Solvents for UV/Vis Spectroscopy

    6. UV/Vis Spectroscopy Generalizations

  2. Types of Electronic Transitions

    1. s to s*

    2. p to p*

    3. h to s*

    4. h to p*

  3. Table of Typical Absorptions of Simple Isolated Chromophores

  4. Empirical Rules for Caluclating Uv/Vis Absorptions

    1. Woodward-Fieser Rules for Dienes

    2. Woodward's Rules for Conjugated Carbonyl Compounds

    3. Mono-Substituted Benzene Derivatives

    4. Di-Substituted Benzene Derivatives

    5. Benzoyl Derivatives

    6. Problems

      1. Unknown 1

      2. Unknown 2

      3. Unknown 3

      4. Unknown 4

      5. Unknown 5

    7. Final Note

    Return to: Spec ID Main Page