The reaction [Co(CN)₅ H₂ O]²⁻+X⁻ → [Co(CN)₅ X]²⁻+H₂ O follows a/an · ABC26IN0250
Subject: Inorganic Chemistry · Chapter: Organometallic Compounds · Topic: Organometallic Compounds – General · Exam: CSIR NET 2015 · Marks: 2 · Difficulty: Easy
The reaction $\left[\mathrm{Co}(\mathrm{CN})_{5} \mathrm{H}_{2} \mathrm{O}\right]^{2-}+\mathrm{X}^{-} \rightarrow\left[\mathrm{Co}(\mathrm{CN})_{5} \mathrm{X}\right]^{2-}+\mathrm{H}_{2} \mathrm{O}$ follows a/an
(a)Interchange dissociative (Id) mechanism
(b)Dissociative (D) mechanism
(c)Associative (A) mechanism
(d)Interchange Associative (Ia) mechanism
Answer
Answer: B ✓ checked by 4AB · confidence medium
The source book printed A; on checking, B is correct — see the explanation.
Book printed (a).
Explanation
Anation of [Co(CN)₅(H₂O)]²⁻ is the classic limiting dissociative (D) case: a detectable five-coordinate [Co(CN)₅]²⁻ intermediate is formed (b).
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