Organic Chemistry Basics 2 Question 82
82. Give reasons for the following in one or two sentences. The central carbon-carbon bond in 1, 3-butadiene is shorter than that of $n$-butane.
(1998)
Show Answer
Solution:
The above shown resonance introduces some double bond character to central $\mathrm{C}-\mathrm{C}$ bond. Therefore, the central $\mathrm{C}-\mathrm{C}$ bond in 1, 3-butadiene is shorter (stronger) than $\mathrm{C}-\mathrm{C}$ bond in butane.
