Question

\([ \text{Mn}_2(\text{CO})_{10} ]\) and \([ \text{Co}_2(\text{CO})_8 ]\) structures have:A. Metal-Metal linkage
B. Terminal CO groups
C. Bridging CO groups
D. Metal in zero oxidation stateChoose the correct answer from the options given below:

• A. Only A, B, C
• B. Only B, C, D
• C. Only A, C, D
• D. Only A, B, D

Answer 1

The Correct Option is D

Mn$_2$(CO)$_{10}$ exhibits a structure characterized by a direct Mn-Mn single bond, ten terminal CO ligands, and no bridging CO ligands. Both Mn atoms possess a zero oxidation state.
Co$_2$(CO)$_8$ presents a more intricate structure and can exist in various isomeric configurations. The prevalent structure incorporates bridging CO groups alongside a Co-Co bond. An alternative configuration features solely terminal CO ligands and a Co-Co bond. Regardless of the isomeric form, Co$_2$(CO)$_8$ contains a metal-metal bond, terminal CO groups, and the potential for bridging CO groups. Each Co atom also maintains a zero oxidation state.
Consequently, the shared characteristics include a Metal-Metal linkage (A), Terminal CO groups (B), and a Metal in zero oxidation state (D).