Question

An example of a sigma-bonded organometallic compound is:

• A. \( \text{Cobaltocene} \)
• B. \( \text{Ruthenocene} \)
• C. \( \text{Ferrocene} \)
• D. \( \text{Grignard's reagent} \)

Hint:

Grignard's reagents (\( \text{RMgX} \)) are highly reactive compounds in organic synthesis due to their nucleophilic carbon, which makes them excellent for forming carbon-carbon bonds in various reactions.