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a. Write the structure of 2,2- dibromobi...

a. Write the structure of `2,2-` dibromobicyclo `[2.2.1]` heptane.
b. How many stereocenters does it contain?
c. How many stereoisomers are predicted by the `2^(n)` rule?
d. Only one pair of enantiomers is possible for `2-2`, dibromobicyclo `[2.2.1]` heptane. Explain.

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(a) and (b)

c. Four
d. Since a trans arrangement of one carbon bridge is structurally impossible, such a molecule would have too much strain.
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