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