Organic Chemistry Basics - Result Question 130
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)
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Solution:
The above shown resonance introduces some double bond character to central $C-C$ bond. Therefore, the central $C-C$ bond in 1, 3-butadiene is shorter (stronger) than $C-C$ bond in butane.
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