1-Bromo [2.2.1] bicycloheptane is unreactive toward both SN2 and SN1 reactions. Open the computer molecular model at...

Question:

1-Bromo [2.2.1] bicycloheptane is unreactive toward both SN2 and SN1 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-romo [2.2.1] bicycloheptane by both SN2 and SN1 reaction mechanisms?