Question
In which of the following species hyperconjugation is possible?
A.
$$C{H_3} - C{H_2}$$
B.
$${C_6}{H_5} - C{H_3}$$
C.
$$C{H_2} = C{H_2}$$
D.
\[C{{H}_{3}}\underset{\begin{smallmatrix}
| \\
\,\,\,\,C{{H}_{3}}
\end{smallmatrix}}{\overset{\begin{smallmatrix}
\,\,\,\,\,C{{H}_{3}} \\
|
\end{smallmatrix}}{\mathop{-C-}}}\,CH=C{{H}_{2}}\]
Answer :
$${C_6}{H_5} - C{H_3}$$
Solution :
For hyperconjugation, $$\alpha $$ - carbon with respect to $$s{p^2}$$ hybridised carbon should have at least one hydrogen.