1
-5
15
35
55
75
95
115
-100 -50 0 50 100 150 200 250 300 350 400 450
Relative Energy vs. Bond Rotation
CHEM 3361/02 EXAM II NAME ______________________________________________________
Spring 2019 TOTAL POINTS 108
Record the following number on your Scantron next to your name: _________
Part I. Multiple Choice (72pts, 4.5pts/ea)
For Problems 1-3, consider the structure shown at right and the Energy Diagram below
1. In the conformation shown at above, the phenyl group is ______ to the ethyl group and ______ to
the methyl group.
a. anti, gauche b. gauche, anti c. gauche, gauche
d. anti, anti e. eclipsed, gauche
2. The conformer shown above corresponds with what position on the energy diagram above?
a. I b. II c. III d. IV e. V
3. What structure below shows the same conformation as that shown above?
a. I b. II c. III d. IV e. none of the above
I.
II.
III.
IV.
V.
