Write structural formulas for each of the following bicyclic hydrocarbons:(a) Bicyclo[2.2....

Write structural formulas for each of the following bicyclic hydrocarbons:

(a) Bicyclo[2.2.1]heptane

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(b) 1,7,7-Trimethylbicyclo[2.2.1]heptanes

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(c) Bicyclo[3.1.1]heptane

Sample Solution (a) The bicyclo[2.2.1]heptane ring system is one of the most frequently encountered bicyclic structural types. It contains seven carbon atoms, as indicated by the suffix -heptane. The bridging groups contain two, two, and one carbon, respectively.