The sum of bridging carbonyls in $\mathrm{W}(\mathrm{CO})_{6}$ and $\mathrm{Mn}_{2}(\mathrm{CO})_{10}$ is ______.

JEE Main · 2023 · 29 Jan 2023 · Shift 1 · Coordination Compounds

The sum of bridging carbonyls in

W (CO)_{6}

and

Mn_{2} (CO)_{10}

is ______.

Answer: 0

Solution

Tungsten hexacarbonyl is octahedral, with all six carbon monoxide ligands bound end-on to the single tungsten atom, so none of them bridges. Dimanganese decacarbonyl is built from two

Mn (CO)_{5}

units joined only by a direct metal--metal bond, with all ten carbonyls terminal and again none bridging. Adding the two counts, the number of bridging carbonyls is zero.

JEE Main · 2023 · 29 Jan 2023 · Shift 1 · Integer answer

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