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Grade 11Physical Chemistry

Haloalkanes react with KCN to give alkyl cyanide as main product while with AgCN they form isocyanide as main product. Give reason.

Profile image of Jayant Kumar
12 Years agoGrade 11
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1 Answer

Profile image of Gaurav
11 Years ago
CN- is an ambient nucleophile i.e. it can form bond from both C and N atoms.
KCN is an ionic compound so both C and N sides are available for the formation of bond, but C-C bond is stronger than C-N bond so cynide is formed.
AgCN is a covalent compound so only N side is available for CN to form bond and thus isocynide is formed

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