TOPIC: 17. Aromatic Compounds
SUBTOPIC: 174. General
5032
Quantitative elemental analysis shows
that the empirical formula of a compound is [CH]n.
The molecular weight is found to be 78.
What is the molecular formula? If
you are told that the compound is known to be very stable, what is its most
likely structure?
5037
Write
the five Kekule-type resonance structures for phenanthrene, and show how these account for the fact that
the 9,10-position behaves much more like a normal double bond in reactivity
than it behaves like an aromatic "double bond".

5080
Draw a representation of benzene which shows the π-molecular orbital as the interaction of overlapping p atomic orbitals