This unit provides the basis for elucidation of organic structure by advanced 1H NMR, 13C NMR and mass spectrometry. It also provides a basis for understanding organic reactivity and organic reaction mechanisms. Reactivity principles that are dealt with include kinetics, transition state theory, methods of determining reaction mechanisms, computational chemistry, pericyclic reactions and properties and reactivity of free radical, carbene and nitrene intermediates. CHEM502 will demand a higher level and degree of difficulty in assessment tasks and a more in-depth understanding of the unit material.