Chemistry, asked by sayympi7525, 1 year ago

Haloalkanes from alkyl halides with kcn and alkyl isocyanide with ecgc and explain why

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Answered by angel4244
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When Alkyl halides reacts with KCN it gives Alkyl cyanides

in this reaction for cyanide ion to get substituted in place of halides we use Aqueous KCN which dissociates completely into K+ and CN- ions

in aqeous solution of KCN as it is aqeous it contains water in more amount i.e. it is dilute solution of KCN which helps to dissociate KCN completely. In Aqueous solution carbon in cyanide ion does not get with hydrogen bonding with water although it is sp hybridized

When KCN is used in presence of ecgc compound as it is polyphenol and organic compound it dissociates KCN partially into K+ and CN- ions

in CN- ion carbon and nitrogen has triple bond hence carbon in this ion is sp hybridized.

As it is sp hybridized in this hybridization carbon has gained more electronegativity than Nitrogen it shows hydrogen bonding with hydrogen atoms of OH group in ecgc compound due to which nitrogen gets attached to get isocyanide
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