For the following reaction + ¹³CO → The structure of the intermediate is · ABC26IN0269
Subject: Inorganic Chemistry · Chapter: Organometallic Compounds · Topic: Organometallic Compounds – General · Exam: CSIR NET 2018 · Marks: 2 · Difficulty: Medium
For the following reaction 
$+\ {}^{13}\mathrm{CO}$ $\longrightarrow$ 
The structure of the intermediate is
$+\ {}^{13}\mathrm{CO}$ $\longrightarrow$ The structure of the intermediate is(a)
(b)
(c)
(d)
Answer
Answer: D ✓ checked by 4AB · confidence high
The source book printed no answer; this one was worked out and checked — see the explanation.
Explanation
Carbonylation goes by migratory insertion: CH₃ migrates onto an already-bound CO, giving the 16-electron acyl intermediate CpFe(CO)(COCH₃) with an unlabelled acetyl, and ¹³CO then fills the vacant site. That is structure 4.
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