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Question 4. Draw a simple molecular orbital diagram for the carbon monoxide (CO) molecule and explain,...

Question 4.

  1. Draw a simple molecular orbital diagram for the carbon monoxide (CO) molecule and explain, using an accurate bonding description, how this molecule can act as a ligand within metal carbonyl compounds.
  2. Explain why CO possesses one infrared (IR) active vibrational mode u(CO), whereas, the di-nitrogen molecule, N2, does not?
  3. Using your bonding description from part (i.), together with the knowledge that CO ligands contain an IR active vibrational mode, explain the variations in u(CO) cm-1 values which arise for the following isoelectronic complexes:

Compound

u(CO) cm-1

[V(CO)6]-

1860

Cr(CO)6

2000

[Mn(CO)6]+

2095

CO (uncoordinated)

2143

Solutions

Expert Solution

queen_honey_blossom answered 11 months ago
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