Deck 30: Par 1

Question 1

​If lobes of like sign are on opposite sides of a molecule,and both orbitals must rotate in the same direction (either both clockwise or both counterclockwise),the kind of motion observed is:

A)​suprafacial.
B)​antarafacial.
C)​disrotatory.
D)​conrotatory.

Answer 1

​conrotatory.

Question 2

​According to the frontier orbital theory,the symmetry of electrocyclic reactions is determined by:

A)​the total number of double bonds present in the molecule.
B)​the symmetry of the HOMO.
C)​the symmetry of the LUMO.
D)​proper orientation of the HOMO of one atom with the LUMO of the other atom.

Answer 2

​the symmetry of the HOMO.