Question

Mn(CO)5 gets dimerised but V (CO)6 does not. Why?

Answer 1

Answer:

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Answer 2

Answer:

A chemical process that results in the formation of a single dimer from the reaction of two identical molecules. This reaction is known as the dimerization reaction.

Explanation:

Vanadium's carbonyl contains 17 valence electrons and has the chemical formula V(CO)₆.

• Since coordination number 6 is significantly more favorable than coordination number 7, it does not dimerize.

• V(CO)₆ is an octahedral-shaped dark violet radical.
• It contains a sterically inactive radical electron. Because it is quickly reduced to the 18 valence electron species, V(CO)₆⁻ can be used as an oxidant.

Manganese carbonyl contains 18 valence electrons and has the chemical formula Mn(CO)₅.

• Thus, it can easily dimerize as it is a stable 18 electron compound.
• It dimerizes into Mn₂(CO)₁₀.

Hence, Mn(CO)₅ gets easily dimerized but V(CO)₆ does not because it is a stable 18 electron compound.

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