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  • Number of complexes which will exhibit synergic bonding amongst, <img alt="\left[\mathrm{Cr}(\mathrm{CO})_{6}\right],\left[\mathrm{Mn}(\mathrm{CO})_{5}\right] \text { and }\left[\mathrm{Mn}_{2

Number of complexes which will exhibit synergic bonding amongst, \left[\mathrm{Cr}(\mathrm{CO})_{6}\right],\left[\mathrm{Mn}(\mathrm{CO})_{5}\right] \text { and }\left[\mathrm{Mn}_{2}(\mathrm{CO})_{10}\right] \text { is } ________.

Option: 1

3


Option: 2

-


Option: 3

-


Option: 4

-


Answers (1)

best_answer

As we have learnt, 

The metal-carbon bond in metal carbonyls possess both \mathrm{\sigma \: and\: \pi} character. The M-C \sigma bond is formed by the donation of lone pair of electrons on the carbonyl carbon into a vacant orbital of the metal.

The M-C \pi bond is formed by the donation of a pair of electrons from a filled d orbital of Metal into the vacant antibonding \pi^{*} orbital of carbon monoxide.

The metal to ligand bonding creates a synergic effect which strengthens the bond between \text{CO} and the metal. This bonding in metal carbonyls is called synergic bonding.

Since, all three complexes are metal carbonyl complexes, all of them would exhibit synergic bonding.

Hence answer is 3

Posted by

SANGALDEEP SINGH

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