TS EAMCET · Chemistry · Coordination Compounds

The number of bridged $CO$ ligands present in ${Fe}_{2} {(CO)}_{9}$ and ${CO}_{2} {(CO)}_{8,}$ respective are

A $2, 1$
B $2, 2$
C $2, 3$
D $3, 2$

Verified Solution

Answer & Solution

Correct Answer

(D) $3, 2$

Step-by-step Solution

Detailed explanation

According to the question, the bridge carbonyl group in Fe2(CO)9 is 3. Similar, the bridge carbonyl group in cobalt octa-carbonyl is 2.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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The number of bridged CO ligands present in Fe2CO9 and CO2CO8, respective are

Step-by-step Solution

The number of bridged $CO$ ligands present in ${Fe}_{2} {(CO)}_{9}$ and ${CO}_{2} {(CO)}_{8,}$ respective are