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The number of CO stretching bands in the infrared spectrum of Fe(CO)5 is(A) 1 (B) 2 (C) 3 (D) 4?
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The number of CO stretching bands in the infrared spectrum of Fe(CO)5 ...
Introduction:
Fe(CO)5 is a metal carbonyl compound, which is a complex of iron and carbon monoxide. It is a colorless, volatile liquid that is used as a reagent in organic synthesis.

Explanation:
The infrared spectrum of Fe(CO)5 shows stretching vibrations of the CO ligands. The number of CO stretching bands in the infrared spectrum of Fe(CO)5 is determined by the number of unique stretching vibrations of the CO ligands.

There are two types of CO ligands in Fe(CO)5: terminal CO ligands and bridging CO ligands. Terminal CO ligands are bonded to a single iron atom, while bridging CO ligands are bonded to two iron atoms.

Answer:
The number of CO stretching bands in the infrared spectrum of Fe(CO)5 is 4.

Explanation:

  • There are three unique stretching vibrations of the terminal CO ligands. Each terminal CO ligand produces a distinct stretching band due to the differences in their bond strength and bond length to the iron atom.

  • There is one unique stretching vibration of the bridging CO ligands. The bridging CO ligands produce a single stretching band because both of the CO bonds are equivalent.



Therefore, the infrared spectrum of Fe(CO)5 shows four CO stretching bands.
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The number of CO stretching bands in the infrared spectrum of Fe(CO)5 is(A) 1 (B) 2 (C) 3 (D) 4?
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