Chapter 6, Problem 47P

1-Bromo[2.2.1] bicycloheptane is unreactive toward both $S_{N}2$ and reactions. Open the computer molecular model at the book’s website titled “1-Bromo[2.2.1] bicycloheptane” and examine the structure. What barriers are there to substitution of 1-bromo[2.2.1] bicycloheptane by both $S_{N}2$ and $S_{N}1$ reaction mechanisms?