Chapter 9, Problem 84AP

Cyclopropane $\left({\text{C}}_{\text{3}}{\text{H}}_{\text{6}}\right)$ has the shape of a triangle in which a C atom is bonded to two H atoms and two other C atoms at each corner. Cubane $\left({\text{C}}_{\text{8}}{\text{H}}_{\text{8}}\right)$ has the shape of a cube in which a C atom is bonded to one H atom and three other C atoms at each comer. (a) Draw Lewis structures of these molecules. (b) Compare the CCC angles in these molecules with those predicted for an $s{p}^3-$ hybridized C atom. (c) Would you expect these molecules to be easy to make?