Molecular Structure and Bonding
p Electrons in Conjugated Organic Molecules
p electron atomic charge and p electron bond order
The Woodward-Hoffmann rules and cycloaddition
Learning
Objectives:
· To learn the
concept of p electron atomic charge and how to
calculate it.
· To learn the
concept of p electron bond order and how to calculate
it.
· To learn about
the principles of orbital symmetry conservation in chemical reactions.
· To apply this to the
cycloaddition of 2 ethenes to form cyclobutane.
· To learn how
to assign symmetries to the MOs of reactants and products and to draw a
correlation diagram which relates them.
Ian Fleming “Frontier Orbitals and
Organic Chemical Reaction”,
Chapter 4.
R.B. Woodward and R Hoffmann
“Conservation of Orbital Symmetry”.
pages 1-64