Question

Consider a positively charged $C_2{H}_3$ species in which the positively charged carbon is sp-hybridized, the uncharged is $s{p}^2-$hybridized and an empty p-orbital is perpendicular to the $\pi$ system. What is the best description of this cation?

• A. vinyl
• B. allenyl
• C. alkyl
• D. allyl

Answer 1

Answer: (A)

vinyl

Considering the given conditions, the charged species is-

$\underset{s{p}^2}{C{H}_2}=\stackrel{+}{C}H$

This is a vinyl cation.